################################################################################################
# Total Ionization Rates for Interstellar Neutral Helium
# IBEX Data Release 9
#
#
# Uploaded: 2015-09-23
#
# References:
#   Interstellar neutral helium in the heliosphere from IBEX I., II., III.
#   Swaczyna et al. 2015, ApJS Special Issue
#   Sokol et al. 2015, ApJS Special Issue
#   Bzowski et al. 2015, ApJS Special Issue
#
# Additional References:
#   Photoionization Rates: Sokol&Bzowski 2014, Photoionization rates for helium: update, arXiv:1411.4826
#   Charge Exchange and Electron Impact Ionization: Bzowski et al. 2013, Modulation of neutral 
#     interstellar He, Ne, O in the heliosphere: survival probabilities and abundances at IBEX, 
#     Astronomy & Astrophysics Vol 557, A50, doi:10.1051/0004-6361/201321700
#   Solar Wind Structure: Sokol et al. 2013, Heliolatitude and time variations of solar wind structure 
#     from in-situ measurements and interplanetary scintillation observations, 
#     Solar Physics Vol 285, pp 167-200, doi:10.1007/s11207-012-9993-9#
#
# Data Location: http://ibex.swri.edu/ibexpublicdata/Data_Release_9/sokolData.html
#
# Contact: Justyna M. Sokol Space Research Centre PAS, Warsaw, Poland (jsokol@cbk.waw.pl)
# 
# Description: Total ionization rates for interstellar neutral helium in the ecliptic plane 
#              at 1 AU as Carrington rotation averages. Total ionization rates are given as 
#              a sum of photoionization by solar EUV radiation, charge exchange with solar 
#              wind protons and alpha-particles for the stationary atom approximation, and 
#              electron impact ionization for the slow solar wind regime.
# 
################################################################################################
# Column Descriptions:
#
# time [decimal year]  ionization rate [s^-1]  Carrington rotation number
################################################################################################
1990.5541524657533	1.5434619411894679e-7	1831.5
1990.628879315068	1.9196932154824384e-7	1832.5
1990.703606164384	1.626784973298854e-7	1833.5
1990.7783330136986	1.6724408092221547e-7	1834.5
1990.8530598630134	1.6139400406259919e-7	1835.5
1990.927786712328	1.6968708370200877e-7	1836.5
1991.002513561644	1.6810371949049377e-7	1837.5
1991.0772404109587	2.0587582300494554e-7	1838.5
1991.1519672602733	2.0063429296560128e-7	1839.5
1991.2266941095893	1.9209818969668158e-7	1840.5
1991.3014209589041	1.761321722820208e-7	1841.5
1991.3761478082188	1.8059828436908803e-7	1842.5
1991.4508746575334	1.930426856459565e-7	1843.5
1991.5256015068494	1.8744986043544105e-7	1844.5
1991.600328356164	1.8095351782989103e-7	1845.5
1991.6750552054789	1.860912616353399e-7	1846.5
1991.7497820547949	1.8268511898225104e-7	1847.5
1991.8245089041095	1.9266306779087537e-7	1848.5
1991.8992357534241	1.6186010203915486e-7	1849.5
1991.9739626027388	1.992690116151982e-7	1850.5
1992.048556420765	1.8537172371619892e-7	1851.5
1992.1230790983602	2.0445274496161486e-7	1852.5
1992.1976017759555	1.617877321234594e-7	1853.5
1992.2721244535521	1.6130490238501024e-7	1854.5
1992.3466471311474	1.3882111913383116e-7	1855.5
1992.4211698087427	1.2865336764750437e-7	1856.5
1992.495692486339	1.4883328832191996e-7	1857.5
1992.5702151639343	1.4264623102160396e-7	1858.5
1992.6447378415296	1.252825491608692e-7	1859.5
1992.7192605191249	1.2125676583719064e-7	1860.5
1992.7937831967215	1.2762681300757548e-7	1861.5
1992.8683058743168	1.4430909383732359e-7	1862.5
1992.9428285519118	1.3276870672575398e-7	1863.5
1993.0173987671235	1.2498454864766358e-7	1864.5
1993.0921256164381	1.2980262954717219e-7	1865.5
1993.166852465753	1.38203056804624e-7	1866.5
1993.241579315069	1.260727335170608e-7	1867.5
1993.3163061643836	1.218959976796443e-7	1868.5
1993.3910330136982	1.2266694112442887e-7	1869.5
1993.4657598630129	1.1512383551334856e-7	1870.5
1993.5404867123289	1.140800630916723e-7	1871.5
1993.6152135616437	1.1321903904844738e-7	1872.5
1993.6899404109583	9.79582376234428e-8	1873.5
1993.7646672602743	1.1640367365138719e-7	1874.5
1993.839394109589	9.84973922235761e-8	1875.5
1993.9141209589036	9.833441248013999e-8	1876.5
1993.9888478082185	1.1625759971007384e-7	1877.5
1994.0635746575344	1.0225410410237377e-7	1878.5
1994.138301506849	1.0038745725495304e-7	1879.5
1994.2130283561637	9.142447329113068e-8	1880.5
1994.2877552054797	7.983109271734396e-8	1881.5
1994.3624820547943	8.325732285606461e-8	1882.5
1994.4372089041092	7.89171762713075e-8	1883.5
1994.511935753425	9.218065568421757e-8	1884.5
1994.5866626027398	8.72551299409729e-8	1885.5
1994.6613894520544	9.541304339955983e-8	1886.5
1994.736116301369	8.95427605491123e-8	1887.5
1994.810843150685	9.549499419743539e-8	1888.5
1994.8855699999997	8.994005293657238e-8	1889.5
1994.9602968493145	8.886822726953306e-8	1890.5
1995.0350236986305	8.815237282106676e-8	1891.5
1995.1097505479452	9.06853142623824e-8	1892.5
1995.1844773972598	9.210620094422082e-8	1893.5
1995.2592042465744	9.53116467024443e-8	1894.5
1995.3339310958904	8.813717732841103e-8	1895.5
1995.4086579452053	8.731422452799917e-8	1896.5
1995.48338479452	9.121533102324552e-8	1897.5
1995.558111643836	8.783196191571879e-8	1898.5
1995.6328384931505	8.566777188915228e-8	1899.5
1995.7075653424652	8.505019312881102e-8	1900.5
1995.7822921917812	8.716774066587955e-8	1901.5
1995.857019041096	8.538314824858339e-8	1902.5
1995.9317458904106	8.534227816593275e-8	1903.5
1996.006455054644	8.342833227184631e-8	1904.5
1996.0809777322406	7.607914998988546e-8	1905.5
1996.155500409836	7.8080950971839e-8	1906.5
1996.2300230874312	7.849680797092399e-8	1907.5
1996.3045457650276	7.849649813606705e-8	1908.5
1996.3790684426228	8.448151228000565e-8	1909.5
1996.453591120218	8.371399582378408e-8	1910.5
1996.5281137978134	8.49168226621551e-8	1911.5
1996.60263647541	8.304962335830915e-8	1912.5
1996.6771591530053	7.655776266703874e-8	1913.5
1996.7516818306003	7.54016570083866e-8	1914.5
1996.826204508197	7.61146302944485e-8	1915.5
1996.9007271857922	8.787445665051443e-8	1916.5
1996.9752498633875	8.456636143525151e-8	1917.5
1997.04990890411	8.145114887499272e-8	1918.5
1997.1246357534246	8.058251729380116e-8	1919.5
1997.1993626027393	8.221553994715226e-8	1920.5
1997.274089452054	8.475050010130877e-8	1921.5
1997.34881630137	8.851381366563161e-8	1922.5
1997.4235431506847	8.994670792295771e-8	1923.5
1997.4982699999994	8.190519559453229e-8	1924.5
1997.5729968493154	8.788897137668834e-8	1925.5
1997.64772369863	9.347518341508551e-8	1926.5
1997.7224505479448	1.0126809805346606e-7	1927.5
1997.7971773972595	9.613328242079479e-8	1928.5
1997.8719042465755	1.0338345375089789e-7	1929.5
1997.94663109589	1.0652595321182825e-7	1930.5
1998.0213579452047	1.0401129575501942e-7	1931.5
1998.0960847945207	9.953002587754329e-8	1932.5
1998.1708116438353	1.0739951917663694e-7	1933.5
1998.2455384931502	1.2056266315933827e-7	1934.5
1998.3202653424662	1.0998413898006773e-7	1935.5
1998.3949921917808	1.0845325132876915e-7	1936.5
1998.4697190410955	1.1675859718254565e-7	1937.5
1998.5444458904103	1.1945330755322655e-7	1938.5
1998.619172739726	1.3279129119706604e-7	1939.5
1998.693899589041	1.377955682828602e-7	1940.5
1998.7686264383556	1.1853058278813907e-7	1941.5
1998.8433532876716	1.2218751050419375e-7	1942.5
1998.9180801369862	1.3298099447339512e-7	1943.5
1998.9928069863008	1.3425465261782878e-7	1944.5
1999.0675338356157	1.2892195027542642e-7	1945.5
1999.1422606849317	1.365954611744692e-7	1946.5
1999.2169875342463	1.2097036391861805e-7	1947.5
1999.291714383561	1.1609511078752349e-7	1948.5
1999.366441232877	1.37837950218161e-7	1949.5
1999.4411680821916	1.4868561932831188e-7	1950.5
1999.5158949315064	1.5567075250580802e-7	1951.5
1999.5906217808222	1.5795672783588708e-7	1952.5
1999.665348630137	1.4497449980113352e-7	1953.5
1999.7400754794517	1.329510471279376e-7	1954.5
1999.8148023287663	1.5416831331478312e-7	1955.5
1999.8895291780823	1.689156223671936e-7	1956.5
1999.964256027397	1.4809191469354608e-7	1957.5
2000.0388763661197	1.4409954585435173e-7	1958.5
2000.113399043716	1.4436963043454484e-7	1959.5
2000.1879217213113	1.7717668297708658e-7	1960.5
2000.2624443989066	1.6592768348808091e-7	1961.5
2000.3369670765019	1.6158787922804754e-7	1962.5
2000.4114897540985	1.6647082196214247e-7	1963.5
2000.4860124316938	1.645875667196783e-7	1964.5
2000.5605351092888	1.7784077994071516e-7	1965.5
2000.6350577868855	1.5125921834333418e-7	1966.5
2000.7095804644807	1.6248496824711898e-7	1967.5
2000.784103142076	1.5000575632347925e-7	1968.5
2000.8586258196724	1.553638502696513e-7	1969.5
2000.9331484972677	1.5350171186592457e-7	1970.5
2001.0076921917805	1.585033565992418e-7	1971.5
2001.0824190410951	1.4759868107828136e-7	1972.5
2001.1571458904111	1.296820704258179e-7	1973.5
2001.2318727397258	1.7240159918297747e-7	1974.5
2001.3065995890404	1.507601956761645e-7	1975.5
2001.3813264383564	1.353332233003184e-7	1976.5
2001.4560532876712	1.5929122592954437e-7	1977.5
2001.5307801369859	1.299814670682789e-7	1978.5
2001.6055069863005	1.4270077329454724e-7	1979.5
2001.6802338356165	1.79367173222862e-7	1980.5
2001.7549606849311	1.8500074809894757e-7	1981.5
2001.829687534246	1.925659963799831e-7	1982.5
2001.9044143835617	1.7494307976810917e-7	1983.5
2001.9791412328766	1.9541502567037358e-7	1984.5
2002.0538680821912	1.8947085421206763e-7	1985.5
2002.1285949315072	1.7253298644127786e-7	1986.5
2002.2033217808219	1.7198296120864833e-7	1987.5
2002.2780486301365	1.6884335993883541e-7	1988.5
2002.3527754794513	1.5974029446133616e-7	1989.5
2002.4275023287673	1.4675385291105528e-7	1990.5
2002.502229178082	1.4054207659196372e-7	1991.5
2002.5769560273966	1.471994937770441e-7	1992.5
2002.6516828767126	1.670070542582452e-7	1993.5
2002.7264097260272	1.5745559390963237e-7	1994.5
2002.801136575342	1.4931267438751735e-7	1995.5
2002.8758634246567	1.4933956410035344e-7	1996.5
2002.9505902739727	1.4942749753506807e-7	1997.5
2003.0253171232873	1.3999110332322796e-7	1998.5
2003.100043972602	1.271081252843898e-7	1999.5
2003.174770821918	1.2137657404569362e-7	2000.5
2003.2494976712328	1.1710826263552127e-7	2001.5
2003.3242245205474	1.0852054035616606e-7	2002.5
2003.3989513698634	1.12209891719635e-7	2003.5
2003.473678219178	1.1461630586422363e-7	2004.5
2003.5484050684927	1.1636053194121712e-7	2005.5
2003.6231319178075	1.1331483199790093e-7	2006.5
2003.6978587671233	1.057790876970506e-7	2007.5
2003.7725856164382	1.1456394029471433e-7	2008.5
2003.8473124657528	1.1896084032873062e-7	2009.5
2003.9220393150688	1.0920248126175674e-7	2010.5
2003.9967661643834	1.0639861764786789e-7	2011.5
2004.071297677595	1.045981883994636e-7	2012.5
2004.1458203551904	9.720698032229269e-8	2013.5
2004.220343032787	1.0513552226701539e-7	2014.5
2004.2948657103823	9.823020808093399e-8	2015.5
2004.3693883879773	9.767060292527821e-8	2016.5
2004.443911065574	9.341824406317551e-8	2017.5
2004.5184337431692	1.021807724336211e-7	2018.5
2004.5929564207645	1.0392038816285315e-7	2019.5
2004.667479098361	1.0603846409498828e-7	2020.5
2004.7420017759562	1.0257075220546098e-7	2021.5
2004.8165244535514	1.1158007001480922e-7	2022.5
2004.8910471311467	1.0729087037980581e-7	2023.5
2004.9655698087433	9.884217228849463e-8	2024.5
2005.0402023287668	1.0044098943644211e-7	2025.5
2005.1149291780816	9.770535364244778e-8	2026.5
2005.1896560273976	9.251738369658893e-8	2027.5
2005.2643828767123	9.005139618404048e-8	2028.5
2005.339109726027	9.12858745767892e-8	2029.5
2005.4138365753415	9.369113565265763e-8	2030.5
2005.4885634246575	1.0020721662115707e-7	2031.5
2005.5632902739724	9.605033067877044e-8	2032.5
2005.638017123287	9.279972223412173e-8	2033.5
2005.712743972603	9.244969916618623e-8	2034.5
2005.7874708219176	8.816060909990849e-8	2035.5
2005.8621976712323	8.620709248536084e-8	2036.5
2005.9369245205482	8.927704038716787e-8	2037.5
2006.0116513698629	9.130517066029244e-8	2038.5
2006.0863782191777	8.769672014833912e-8	2039.5
2006.1611050684924	8.33498178192728e-8	2040.5
2006.2358319178084	8.857760457896312e-8	2041.5
2006.310558767123	9.04287971239167e-8	2042.5
2006.3852856164376	8.457236815564423e-8	2043.5
2006.4600124657536	8.266750740609427e-8	2044.5
2006.5347393150685	8.665610927901299e-8	2045.5
2006.609466164383	8.36434850386547e-8	2046.5
2006.6841930136977	8.427334685622396e-8	2047.5
2006.7589198630137	8.342098904732605e-8	2048.5
2006.8336467123283	8.326185693005465e-8	2049.5
2006.9083735616432	7.906685410075092e-8	2050.5
2006.9831004109592	7.601722699089883e-8	2051.5
2007.0578272602738	7.884715326628748e-8	2052.5
2007.1325541095885	7.708023871844934e-8	2053.5
2007.2072809589044	7.593758140783129e-8	2054.5
2007.282007808219	7.631749755749885e-8	2055.5
2007.356734657534	7.788804800019337e-8	2056.5
2007.4314615068486	7.47439502319674e-8	2057.5
2007.5061883561646	7.619133465452975e-8	2058.5
2007.5809152054792	7.520226984657185e-8	2059.5
2007.6556420547938	7.361159451477345e-8	2060.5
2007.7303689041098	7.098598685950313e-8	2061.5
2007.8050957534244	7.33002792184764e-8	2062.5
2007.8798226027393	7.152640762192692e-8	2063.5
2007.9545494520553	7.352125793298913e-8	2064.5
2008.0291963114755	7.29681511302475e-8	2065.5
2008.1037189890708	6.828887911232047e-8	2066.5
2008.178241666666	6.767519104350936e-8	2067.5
2008.2527643442625	6.897621185883032e-8	2068.5
2008.3272870218577	6.952379331290693e-8	2069.5
2008.401809699453	6.985978234069986e-8	2070.5
2008.4763323770494	6.9245465440399e-8	2071.5
2008.5508550546447	6.856825695570678e-8	2072.5
2008.62537773224	7.116970811860108e-8	2073.5
2008.6999004098352	7.217584471185533e-8	2074.5
2008.7744230874318	6.972939032243351e-8	2075.5
2008.848945765027	7.165602103785597e-8	2076.5
2008.9234684426224	7.067966569904975e-8	2077.5
2008.9979911202188	7.012856018245099e-8	2078.5
2009.0727124657533	7.336922591241313e-8	2079.5
2009.147439315068	7.193924016487301e-8	2080.5
2009.2221661643828	7.126629786821432e-8	2081.5
2009.2968930136985	6.84195843120129e-8	2082.5
2009.3716198630134	7.320342438866227e-8	2083.5
2009.446346712328	7.854685001413734e-8	2084.5
2009.521073561644	7.090654784352373e-8	2085.5
2009.5958004109586	7.073230080541708e-8	2086.5
2009.6705272602735	6.970069003350358e-8	2087.5
2009.7452541095893	7.508970960027877e-8	2088.5
2009.8199809589041	7.5593283704277e-8	2089.5
2009.8947078082188	7.594122560870576e-8	2090.5
2009.9694346575334	7.931247486427789e-8	2091.5
2010.0441615068494	8.269109560736254e-8	2092.5
2010.118888356164	8.324068308559439e-8	2093.5
2010.1936152054789	8.570357324647519e-8	2094.5
2010.2683420547949	7.990837229846098e-8	2095.5
2010.3430689041095	8.112781607898617e-8	2096.5
2010.4177957534241	7.962954534197193e-8	2097.5
2010.49252260274	8.127194715888433e-8	2098.5
2010.5672494520547	8.774990523416209e-8	2099.5
2010.6419763013696	8.504905414618798e-8	2100.5
2010.7167031506842	8.82445994004924e-8	2101.5
2010.7914300000002	8.794837798370245e-8	2102.5
2010.8661568493148	9.037272602175966e-8	2103.5
2010.9408836986295	8.776648729686523e-8	2104.5
2011.0156105479455	8.584088493633955e-8	2105.5
2011.09033739726	9.144221015150066e-8	2106.5
2011.165064246575	1.0089561880434959e-7	2107.5
2011.2397910958896	1.0850659371586967e-7	2108.5
2011.3145179452056	1.0586898735396808e-7	2109.5
2011.3892447945202	1.0223129042737776e-7	2110.5
2011.4639716438348	9.702424318795714e-8	2111.5
2011.5386984931508	9.852170828236943e-8	2112.5
2011.6134253424657	1.0098923582066061e-7	2113.5
2011.6881521917803	1.1955734773451124e-7	2114.5
2011.7628790410963	1.3172880620214858e-7	2115.5
2011.837605890411	1.4148584319984714e-7	2116.5
2011.9123327397256	1.3232377382354807e-7	2117.5
2011.9870595890404	1.3000334058948715e-7	2118.5
2012.061617622951	1.2484202462968502e-7	2119.5
2012.1361403005462	1.1337252103570003e-7	2120.5
2012.2106629781415	1.141270316900627e-7	2121.5
2012.285185655738	1.1461579897895479e-7	2122.5
2012.3597083333332	1.1858950405622063e-7	2123.5
2012.4342310109284	1.1526816040576713e-7	2124.5
2012.5087536885237	1.1781482209892542e-7	2125.5
2012.5832763661203	1.1917592932597503e-7	2126.5
2012.6577990437156	1.1892328648916911e-7	2127.5
2012.7323217213109	1.2366120355893185e-7	2128.5
2012.8068443989073	1.1765752131408539e-7	2129.5
2012.8813670765026	1.2346063237890397e-7	2130.5
2012.9558897540978	1.1393717247077904e-7	2131.5
2013.030495753425	1.306523647250187e-7	2132.5
2013.1052226027398	1.1502833891620935e-7	2133.5
2013.1799494520544	1.2461831264831627e-7	2134.5
2013.254676301369	1.1324227967544162e-7	2135.5
2013.329403150685	1.2571035883641984e-7	2136.5
2013.4041299999997	1.221675067016746e-7	2137.5
2013.478856849315	1.18830689551003e-7	2138.5
2013.5535836986296	1.225924053996785e-7	2139.5
2013.6283105479451	1.209375991040313e-7	2140.5
2013.7030373972602	1.1196233808880656e-7	2141.5
2013.7777642465749	1.2080814787337592e-7	2142.5
2013.85249109589	1.3552251240744108e-7	2143.5
2013.927217945205	1.3375488075786003e-7	2144.5
2014.0019447945203	1.3977373539098965e-7	2145.5
2014.0766716438354	1.399916630755402e-7	2146.5
2014.1513984931505	1.485621589653025e-7	2147.5
2014.2261253424656	1.4715414351777693e-7	2148.5
2014.3008521917807	1.3117313048647088e-7	2149.5
2014.3755790410955	1.2728205654857888e-7	2150.5
2014.4503058904106	1.1946830720214655e-7	2151.5
2014.525032739726	1.370953277190367e-7	2152.5
2014.5997595890408	1.3014420437032262e-7	2153.5
2014.674486438356	1.4112160337601037e-7	2154.5