Naive download script + data files
The data files were downloaded on July 26th 2019. Also added the bare minimum configuration to build a source package. Updated the README with copyright mentions and a usage example.
This commit is contained in:
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dist/
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build/
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*.egg-info/
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__pycache__/
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Copyright (c) 2019 Bruno Bord, PeopleDoc Inc.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE
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recursive-include skyfield_data/data *
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download:
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python3 download.py
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clean:
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rm -f skyfield_data/data/*
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package:
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python3 setup.py sdist
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23
README.md
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README.md
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@ -19,3 +19,26 @@ Several issues are raised by these data files:
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This way, you could **install or upgrade** this data package via ``pip``.
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Once all the files are on your disk space, you can instantiate your ``skyfield`` loader pointing at their path, without having to worry about anything.
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## Usage
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Once you have installed ``skyfield_data``, you may create a dedicated loader with the following code:
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```python
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from skyfield_data import get_skyfield_data_path
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from skyfield.api import Loader
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load = Loader(get_skyfield_data_path())
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planets = load('de421.bsp')
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```
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## Copyright
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### Data files
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* `de421.bsp` is provided by the *Jet Propulsion Laboratory*,
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* `deltat.data` and `deltat.preds` are provided by the *United States Naval Observatory*,
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* `Leap_Second.dat` is provided by the *International Earth Rotation and Reference Systems Service*.
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### Software
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This Python Package code is published under the terms of the MIT license. See the ``COPYING`` file for more details.
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#!/usr/bin/python3
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import shutil
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from os.path import join, exists
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from urllib.request import urlopen
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from skyfield_data import get_skyfield_data_path
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JPL = "ftp://ssd.jpl.nasa.gov/pub/eph/planets/bsp"
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USNO = "http://maia.usno.navy.mil/ser7"
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IERS = "https://hpiers.obspm.fr/iers/bul/bulc"
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items = (
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("de421.bsp", JPL),
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("deltat.data", USNO),
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("deltat.preds", USNO),
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("Leap_Second.dat", IERS),
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)
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def download(url, target):
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"Download (binary) ``url`` and save it to ``target``."
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print("URL: {}".format(url))
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with urlopen(url) as response:
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with open(target, "wb") as fd:
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shutil.copyfileobj(response, fd)
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if __name__ == '__main__':
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for filename, server in items:
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url = "{}/{}".format(server, filename)
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target = join(get_skyfield_data_path(), filename)
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if not exists(target):
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print("Downloading {}".format(filename))
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download(url, target)
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else:
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print("Skipping {}".format(filename))
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print("OK")
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[metadata]
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name = skyfield-data
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version = 0.0.0
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author = Bruno Bord
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author-email = bruno@jehaisleprintemps.net
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home-page = https://github.com/brunobord/skyfield-data
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description = Data package for Skyfield
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long-description = file: README.md
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long-description-content-type = text/markdown
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license = MIT
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license-file = COPYING
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platform = any
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keywords = astronomy science
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classifiers =
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Development Status :: 3 - Alpha
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Intended Audience :: Developers
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License :: OSI Approved :: MIT License
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Operating System :: OS Independent
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Programming Language :: Python
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Programming Language :: Python :: 3.3
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Programming Language :: Python :: 3.4
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Programming Language :: Python :: 3.5
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Programming Language :: Python :: 3.6
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Programming Language :: Python :: 3.7
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[options]
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zip_safe = false
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include_package_data = True
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python_requires = >= 3.3
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packages = skyfield_data
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setup_requires =
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setuptools
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from os.path import dirname, join, abspath
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__DATA_PATH = abspath(join(dirname(__file__), "data"))
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def get_skyfield_data_path():
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"""
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Return the data path to be used along with Skyfield loader.
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Example usage::
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from skyfield_data import get_skyfield_data_path
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from skyfield.api import Loader
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load = Loader(get_skyfield_data_path())
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planets = load('de421.bsp')
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"""
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return __DATA_PATH
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__all__ = [get_skyfield_data_path]
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# Value of TAI-UTC in second valid beetween the initial value until
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# the epoch given on the next line. The last line reads that NO
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# leap second was introduced since the corresponding date
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# Updated through IERS Bulletin 58 issued in July 2019
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#
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#
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# File expires on 28 June 2020
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#
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#
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# MJD Date TAI-UTC (s)
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# day month year
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# --- -------------- ------
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#
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41317.0 1 1 1972 10
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41499.0 1 7 1972 11
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41683.0 1 1 1973 12
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42048.0 1 1 1974 13
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45151.0 1 7 1982 21
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47161.0 1 1 1988 24
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48257.0 1 1 1991 26
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48804.0 1 7 1992 27
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49169.0 1 7 1993 28
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49534.0 1 7 1994 29
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51179.0 1 1 1999 32
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53736.0 1 1 2006 33
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54832.0 1 1 2009 34
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56109.0 1 7 2012 35
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57204.0 1 7 2015 36
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57754.0 1 1 2017 37
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1973 2 1 43.4724
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1973 3 1 43.5648
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1973 4 1 43.6737
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1973 5 1 43.7782
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1973 6 1 43.8763
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1973 7 1 43.9562
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1973 8 1 44.0315
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1973 9 1 44.1132
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1973 10 1 44.1982
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1973 11 1 44.2952
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1973 12 1 44.3936
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1974 1 1 44.4841
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1974 8 1 45.0584
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1974 10 1 45.2064
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1974 11 1 45.2980
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1974 12 1 45.3897
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1975 1 1 45.4761
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1975 2 1 45.5632
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1975 3 1 45.6450
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1975 4 1 45.7375
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1976 12 1 47.4319
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1977 5 1 47.8771
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1977 12 1 48.4355
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1978 11 1 49.4018
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1978 12 1 49.4945
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1979 10 1 50.2968
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1979 11 1 50.3831
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1979 12 1 50.4599
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1980 1 1 50.5387
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1980 2 1 50.6160
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1980 3 1 50.6866
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1980 4 1 50.7658
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1980 5 1 50.8454
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1980 6 1 50.9187
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1980 7 1 50.9761
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1980 8 1 51.0278
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1980 9 1 51.0843
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1980 10 1 51.1538
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1980 11 1 51.2319
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1980 12 1 51.3063
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1981 1 1 51.3808
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1981 2 1 51.4526
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1981 3 1 51.5160
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1981 4 1 51.5985
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1981 5 1 51.6809
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1981 6 1 51.7573
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1981 7 1 51.8133
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1981 8 1 51.8532
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1981 9 1 51.9014
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1981 10 1 51.9603
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1981 11 1 52.0328
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1981 12 1 52.0985
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1982 1 1 52.1668
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1982 2 1 52.2316
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1982 3 1 52.2938
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1982 4 1 52.3680
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1982 5 1 52.4465
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1982 6 1 52.5180
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1982 7 1 52.5751
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1982 8 1 52.6178
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1982 9 1 52.6668
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1982 10 1 52.7340
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1982 11 1 52.8056
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1982 12 1 52.8792
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1983 1 1 52.9565
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1983 2 1 53.0445
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1983 3 1 53.1268
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1983 4 1 53.2197
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1983 6 1 53.3747
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1983 7 1 53.4335
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1983 8 1 53.4778
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1983 9 1 53.5300
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1983 10 1 53.5845
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1983 11 1 53.6523
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1983 12 1 53.7256
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1984 1 1 53.7882
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1984 2 1 53.8367
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1984 3 1 53.8830
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1984 4 1 53.9443
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1984 5 1 54.0042
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1984 6 1 54.0536
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1984 7 1 54.0856
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1985 2 1 54.3911
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1985 3 1 54.4320
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1985 4 1 54.4898
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1985 5 1 54.5456
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1985 6 1 54.5977
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1985 7 1 54.6355
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1985 8 1 54.6532
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1985 9 1 54.6776
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1985 10 1 54.7174
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1985 11 1 54.7741
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1985 12 1 54.8253
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1986 1 1 54.8712
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1987 11 1 55.7168
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1987 12 1 55.7698
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1988 1 1 55.8197
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1988 2 1 55.8615
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1988 3 1 55.9130
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1988 4 1 55.9663
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1988 5 1 56.0220
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1988 6 1 56.0700
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1988 7 1 56.0939
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1988 8 1 56.1105
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1988 9 1 56.1314
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1988 10 1 56.1611
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1988 11 1 56.2068
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1988 12 1 56.2582
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1989 1 1 56.3000
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1989 2 1 56.3399
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1989 3 1 56.3790
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1989 4 1 56.4283
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1989 5 1 56.4804
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1989 6 1 56.5352
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1989 7 1 56.5697
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1989 8 1 56.5983
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1989 9 1 56.6328
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1989 10 1 56.6739
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1989 11 1 56.7332
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1989 12 1 56.7972
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1990 1 1 56.8553
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1990 2 1 56.9111
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1990 3 1 56.9755
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1990 4 1 57.0471
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1990 5 1 57.1136
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1990 6 1 57.1738
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1990 7 1 57.2226
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1990 8 1 57.2597
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1990 9 1 57.3073
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1990 10 1 57.3643
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1990 11 1 57.4334
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1990 12 1 57.5016
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1991 1 1 57.5653
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1991 2 1 57.6333
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1991 3 1 57.6973
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1991 4 1 57.7711
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1991 5 1 57.8407
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1991 9 1 58.0425
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1991 11 1 58.1679
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1991 12 1 58.2389
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1992 3 1 58.4537
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1993 1 1 59.1218
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1993 10 1 59.7588
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1993 11 1 59.8386
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1993 12 1 59.9111
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1994 1 1 59.9845
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1994 3 1 60.1231
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1994 4 1 60.2042
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1994 5 1 60.2804
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1994 6 1 60.3530
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1994 7 1 60.4012
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1994 8 1 60.4440
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1994 9 1 60.4900
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1994 10 1 60.5578
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1994 11 1 60.6324
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1994 12 1 60.7059
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1995 1 1 60.7853
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1995 2 1 60.8663
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1995 3 1 60.9387
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1995 4 1 61.0277
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1995 5 1 61.1103
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1995 6 1 61.1870
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1995 7 1 61.2454
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1995 8 1 61.2881
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1995 9 1 61.3378
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1995 10 1 61.4036
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1995 11 1 61.4760
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1995 12 1 61.5525
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1996 1 1 61.6287
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1996 2 1 61.6846
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1996 3 1 61.7433
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1996 4 1 61.8132
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1996 5 1 61.8823
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1996 6 1 61.9497
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1996 7 1 61.9969
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1996 8 1 62.0343
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1996 9 1 62.0714
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1996 10 1 62.1202
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1996 11 1 62.1809
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1996 12 1 62.2382
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1997 1 1 62.2950
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1997 2 1 62.3506
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1997 3 1 62.3995
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1997 4 1 62.4754
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1997 5 1 62.5463
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1997 6 1 62.6136
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1997 7 1 62.6571
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1997 8 1 62.6942
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1997 9 1 62.7383
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1997 10 1 62.7926
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1997 11 1 62.8567
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1997 12 1 62.9146
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||||
1998 1 1 62.9659
|
||||
1998 2 1 63.0217
|
||||
1998 3 1 63.0807
|
||||
1998 4 1 63.1462
|
||||
1998 5 1 63.2053
|
||||
1998 6 1 63.2599
|
||||
1998 7 1 63.2844
|
||||
1998 8 1 63.2961
|
||||
1998 9 1 63.3126
|
||||
1998 10 1 63.3422
|
||||
1998 11 1 63.3871
|
||||
1998 12 1 63.4339
|
||||
1999 1 1 63.4673
|
||||
1999 2 1 63.4979
|
||||
1999 3 1 63.5319
|
||||
1999 4 1 63.5679
|
||||
1999 5 1 63.6104
|
||||
1999 6 1 63.6444
|
||||
1999 7 1 63.6642
|
||||
1999 8 1 63.6739
|
||||
1999 9 1 63.6926
|
||||
1999 10 1 63.7147
|
||||
1999 11 1 63.7518
|
||||
1999 12 1 63.7927
|
||||
2000 1 1 63.8285
|
||||
2000 2 1 63.8557
|
||||
2000 3 1 63.8804
|
||||
2000 4 1 63.9075
|
||||
2000 5 1 63.9393
|
||||
2000 6 1 63.9691
|
||||
2000 7 1 63.9799
|
||||
2000 8 1 63.9833
|
||||
2000 9 1 63.9938
|
||||
2000 10 1 64.0093
|
||||
2000 11 1 64.0400
|
||||
2000 12 1 64.0670
|
||||
2001 1 1 64.0908
|
||||
2001 2 1 64.1068
|
||||
2001 3 1 64.1282
|
||||
2001 4 1 64.1584
|
||||
2001 5 1 64.1833
|
||||
2001 6 1 64.2094
|
||||
2001 7 1 64.2117
|
||||
2001 8 1 64.2073
|
||||
2001 9 1 64.2116
|
||||
2001 10 1 64.2223
|
||||
2001 11 1 64.2500
|
||||
2001 12 1 64.2761
|
||||
2002 1 1 64.2998
|
||||
2002 2 1 64.3192
|
||||
2002 3 1 64.3450
|
||||
2002 4 1 64.3735
|
||||
2002 5 1 64.3943
|
||||
2002 6 1 64.4151
|
||||
2002 7 1 64.4132
|
||||
2002 8 1 64.4118
|
||||
2002 9 1 64.4097
|
||||
2002 10 1 64.4168
|
||||
2002 11 1 64.4329
|
||||
2002 12 1 64.4511
|
||||
2003 1 1 64.4734
|
||||
2003 2 1 64.4893
|
||||
2003 3 1 64.5053
|
||||
2003 4 1 64.5269
|
||||
2003 5 1 64.5471
|
||||
2003 6 1 64.5597
|
||||
2003 7 1 64.5512
|
||||
2003 8 1 64.5371
|
||||
2003 9 1 64.5359
|
||||
2003 10 1 64.5415
|
||||
2003 11 1 64.5544
|
||||
2003 12 1 64.5654
|
||||
2004 1 1 64.5736
|
||||
2004 2 1 64.5891
|
||||
2004 3 1 64.6015
|
||||
2004 4 1 64.6176
|
||||
2004 5 1 64.6374
|
||||
2004 6 1 64.6549
|
||||
2004 7 1 64.6530
|
||||
2004 8 1 64.6379
|
||||
2004 9 1 64.6372
|
||||
2004 10 1 64.6400
|
||||
2004 11 1 64.6543
|
||||
2004 12 1 64.6723
|
||||
2005 1 1 64.6876
|
||||
2005 2 1 64.7052
|
||||
2005 3 1 64.7313
|
||||
2005 4 1 64.7575
|
||||
2005 5 1 64.7811
|
||||
2005 6 1 64.8001
|
||||
2005 7 1 64.7995
|
||||
2005 8 1 64.7876
|
||||
2005 9 1 64.7831
|
||||
2005 10 1 64.7921
|
||||
2005 11 1 64.8096
|
||||
2005 12 1 64.8311
|
||||
2006 1 1 64.8452
|
||||
2006 2 1 64.8597
|
||||
2006 3 1 64.8850
|
||||
2006 4 1 64.9175
|
||||
2006 5 1 64.9480
|
||||
2006 6 1 64.9794
|
||||
2006 7 1 64.9895
|
||||
2006 8 1 65.0028
|
||||
2006 9 1 65.0138
|
||||
2006 10 1 65.0371
|
||||
2006 11 1 65.0773
|
||||
2006 12 1 65.1122
|
||||
2007 1 1 65.1464
|
||||
2007 2 1 65.1833
|
||||
2007 3 1 65.2145
|
||||
2007 4 1 65.2494
|
||||
2007 5 1 65.2921
|
||||
2007 6 1 65.3279
|
||||
2007 7 1 65.3413
|
||||
2007 8 1 65.3452
|
||||
2007 9 1 65.3496
|
||||
2007 10 1 65.3711
|
||||
2007 11 1 65.3972
|
||||
2007 12 1 65.4296
|
||||
2008 1 1 65.4573
|
||||
2008 2 1 65.4868
|
||||
2008 3 1 65.5152
|
||||
2008 4 1 65.5450
|
||||
2008 5 1 65.5781
|
||||
2008 6 1 65.6127
|
||||
2008 7 1 65.6287
|
||||
2008 8 1 65.6370
|
||||
2008 9 1 65.6493
|
||||
2008 10 1 65.6760
|
||||
2008 11 1 65.7097
|
||||
2008 12 1 65.7461
|
||||
2009 1 1 65.7768
|
||||
2009 2 1 65.8025
|
||||
2009 3 1 65.8237
|
||||
2009 4 1 65.8595
|
||||
2009 5 1 65.8973
|
||||
2009 6 1 65.9323
|
||||
2009 7 1 65.9509
|
||||
2009 8 1 65.9534
|
||||
2009 9 1 65.9628
|
||||
2009 10 1 65.9839
|
||||
2009 11 1 66.0147
|
||||
2009 12 1 66.0420
|
||||
2010 1 1 66.0699
|
||||
2010 2 1 66.0961
|
||||
2010 3 1 66.1310
|
||||
2010 4 1 66.1683
|
||||
2010 5 1 66.2072
|
||||
2010 6 1 66.2356
|
||||
2010 7 1 66.2409
|
||||
2010 8 1 66.2335
|
||||
2010 9 1 66.2349
|
||||
2010 10 1 66.2441
|
||||
2010 11 1 66.2751
|
||||
2010 12 1 66.3054
|
||||
2011 1 1 66.3246
|
||||
2011 2 1 66.3406
|
||||
2011 3 1 66.3624
|
||||
2011 4 1 66.3957
|
||||
2011 5 1 66.4289
|
||||
2011 6 1 66.4619
|
||||
2011 7 1 66.4749
|
||||
2011 8 1 66.4751
|
||||
2011 9 1 66.4829
|
||||
2011 10 1 66.5056
|
||||
2011 11 1 66.5383
|
||||
2011 12 1 66.5706
|
||||
2012 1 1 66.6030
|
||||
2012 2 1 66.6340
|
||||
2012 3 1 66.6569
|
||||
2012 4 1 66.6925
|
||||
2012 5 1 66.7289
|
||||
2012 6 1 66.7579
|
||||
2012 7 1 66.7708
|
||||
2012 8 1 66.7740
|
||||
2012 9 1 66.7846
|
||||
2012 10 1 66.8103
|
||||
2012 11 1 66.8400
|
||||
2012 12 1 66.8779
|
||||
2013 1 1 66.9069
|
||||
2013 2 1 66.9443
|
||||
2013 3 1 66.9762
|
||||
2013 4 1 67.0258
|
||||
2013 5 1 67.0716
|
||||
2013 6 1 67.1100
|
||||
2013 7 1 67.1266
|
||||
2013 8 1 67.1331
|
||||
2013 9 1 67.1458
|
||||
2013 10 1 67.1717
|
||||
2013 11 1 67.2091
|
||||
2013 12 1 67.2460
|
||||
2014 1 1 67.2810
|
||||
2014 2 1 67.3136
|
||||
2014 3 1 67.3457
|
||||
2014 4 1 67.3890
|
||||
2014 5 1 67.4318
|
||||
2014 6 1 67.4666
|
||||
2014 7 1 67.4858
|
||||
2014 8 1 67.4989
|
||||
2014 9 1 67.5111
|
||||
2014 10 1 67.5353
|
||||
2014 11 1 67.5711
|
||||
2014 12 1 67.6070
|
||||
2015 1 1 67.6439
|
||||
2015 2 1 67.6765
|
||||
2015 3 1 67.7117
|
||||
2015 4 1 67.7591
|
||||
2015 5 1 67.8012
|
||||
2015 6 1 67.8402
|
||||
2015 7 1 67.8606
|
||||
2015 8 1 67.8822
|
||||
2015 9 1 67.9120
|
||||
2015 10 1 67.9546
|
||||
2015 11 1 68.0055
|
||||
2015 12 1 68.0514
|
||||
2016 1 1 68.1024
|
||||
2016 2 1 68.1577
|
||||
2016 3 1 68.2044
|
||||
2016 4 1 68.2664
|
||||
2016 5 1 68.3188
|
||||
2016 6 1 68.3704
|
||||
2016 7 1 68.3964
|
||||
2016 8 1 68.4094
|
||||
2016 9 1 68.4305
|
||||
2016 10 1 68.4630
|
||||
2016 11 1 68.5078
|
||||
2016 12 1 68.5537
|
||||
2017 1 1 68.5927
|
||||
2017 2 1 68.6298
|
||||
2017 3 1 68.6671
|
||||
2017 4 1 68.7135
|
||||
2017 5 1 68.7623
|
||||
2017 6 1 68.8033
|
||||
2017 7 1 68.8245
|
||||
2017 8 1 68.8373
|
||||
2017 9 1 68.8477
|
||||
2017 10 1 68.8689
|
||||
2017 11 1 68.9006
|
||||
2017 12 1 68.9355
|
||||
2018 1 1 68.9676
|
||||
2018 2 1 68.9875
|
||||
2018 3 1 69.0176
|
||||
2018 4 1 69.0499
|
||||
2018 5 1 69.0823
|
||||
2018 6 1 69.1070
|
||||
2018 7 1 69.1134
|
||||
2018 8 1 69.1142
|
||||
2018 9 1 69.1207
|
||||
2018 10 1 69.1356
|
||||
2018 11 1 69.1646
|
||||
2018 12 1 69.1964
|
||||
2019 1 1 69.2202
|
||||
2019 2 1 69.2452
|
||||
2019 3 1 69.2733
|
||||
2019 4 1 69.3032
|
||||
2019 5 1 69.3326
|
||||
2019 6 1 69.3540
|
|
@ -0,0 +1,37 @@
|
|||
MJD YEAR TT-UT Pred UT1-UTC Pred ERROR
|
||||
58484.000 2019.00 69.34 -0.152 0.117
|
||||
58575.000 2019.25 69.48 -0.295 0.162
|
||||
58666.000 2019.50 69.62 -0.440 0.215
|
||||
58758.000 2019.75 69.71 -0.527 0.273
|
||||
58849.000 2020.00 69.87 0.335
|
||||
58940.000 2020.25 70.03 0.399
|
||||
59032.000 2020.50 70.16 0.465
|
||||
59123.000 2020.75 70.24 0.532
|
||||
59214.000 2021.00 70.39 0.600
|
||||
59306.000 2021.25 70.55 0.668
|
||||
59397.000 2021.50 70.68 0.736
|
||||
59488.000 2021.75 70.76 0.803
|
||||
59580.000 2022.00 70.91 0.870
|
||||
59671.000 2022.25 71.06 0.936
|
||||
59762.000 2022.50 71.18 1.000
|
||||
59853.000 2022.75 71.25 1.064
|
||||
59945.000 2023.00 71.40 1.126
|
||||
60036.000 2023.25 71.54 1.186
|
||||
60127.000 2023.50 71.67 1.245
|
||||
60219.000 2023.75 71.74 1.302
|
||||
60310.000 2024.00 71.88 1.358
|
||||
60401.000 2024.25 72.03 1.411
|
||||
60493.000 2024.50 72.15 1.463
|
||||
60584.000 2024.75 72.22 1.514
|
||||
60675.000 2025.00 72.36 1.562
|
||||
60767.000 2025.25 72.50 1.609
|
||||
60858.000 2025.50 72.62 1.654
|
||||
60949.000 2025.75 72.69 1.697
|
||||
61041.000 2026.00 72.83 1.738
|
||||
61132.000 2026.25 72.98 1.778
|
||||
61223.000 2026.50 73.10 1.816
|
||||
61314.000 2026.75 73.17 1.853
|
||||
61406.000 2027.00 73.32 1.887
|
||||
61497.000 2027.25 73.46 1.921
|
||||
61588.000 2027.50 73.58 1.953
|
||||
61680.000 2027.75 73.66 1.983
|
Loading…
Reference in New Issue