coefficient,year,probe type,median,stderr alpha,1967.5, T4/T6,-0.0045643,0.011074 alpha,1968.5, T4/T6,-0.0021055,0.01213 alpha,1969.5, T4/T6,0.00035322,0.013185 alpha,1970.5, T4/T6,0.002812,0.01424 alpha,1971.5, T4/T6,0.0052707,0.015295 alpha,1972.5, T4/T6,0.010184,0.012289 alpha,1973.5, T4/T6,0.015096,0.0092826 alpha,1974.5, T4/T6,0.020009,0.0062763 alpha,1975.5, T4/T6,0.021383,0.0090645 alpha,1976.5, T4/T6,0.022757,0.011853 alpha,1977.5, T4/T6,0.02413,0.014641 alpha,1978.5, T4/T6,0.021191,0.013945 alpha,1979.5, T4/T6,0.018252,0.013249 alpha,1980.5, T4/T6,0.015312,0.012553 alpha,1981.5, T4/T6,0.012373,0.011857 alpha,1982.5, T4/T6,0.0094334,0.011162 alpha,1983.5, T4/T6,0.006189,0.01042 alpha,1984.5, T4/T6,0.0029446,0.0096776 alpha,1985.5, T4/T6,-0.00029977,0.0089357 alpha,1986.5, T4/T6,-0.0035442,0.0081937 alpha,1987.5, T4/T6,-0.0024755,0.0079225 alpha,1988.5, T4/T6,-0.0014068,0.0076513 alpha,1989.5, T4/T6,-0.0020562,0.010671 alpha,1990.5, T4/T6,-0.0027056,0.01369 alpha,1991.5, T4/T6,-0.0022805,0.0091288 alpha,1992.5, T4/T6,-0.0018554,0.0045676 alpha,1993.5, T4/T6,-0.00043609,0.0048448 alpha,1994.5, T4/T6,0.0009832,0.005122 alpha,1995.5, T4/T6,0.0024025,0.0053992 alpha,1996.5, T4/T6,0.0038218,0.0056764 alpha,1997.5, T4/T6,0.0052411,0.0059536 alpha,1998.5, T4/T6,0.0066604,0.0062308 alpha,1999.5, T4/T6,0.0080796,0.006508 alpha,2000.5, T4/T6,0.0094989,0.0067852 alpha,2001.5, T4/T6,0.010918,0.0070624 alpha,2002.5, T4/T6, NaN, NaN alpha,2003.5, T4/T6, NaN, NaN alpha,2004.5, T4/T6, NaN, NaN alpha,2005.5, T4/T6, NaN, NaN alpha,2006.5, T4/T6, NaN, NaN alpha,2007.5, T4/T6, NaN, NaN alpha,2008.5, T4/T6, NaN, NaN alpha,2009.5, T4/T6, NaN, NaN alpha,2010.5, T4/T6, NaN, NaN alpha,1967.5, T7/DB, NaN, NaN alpha,1968.5, T7/DB, NaN, NaN alpha,1969.5, T7/DB, NaN, NaN alpha,1970.5, T7/DB,0.0054601,0.0039324 alpha,1971.5, T7/DB,0.0041204,0.0045452 alpha,1972.5, T7/DB,0.0027807,0.005158 alpha,1973.5, T7/DB,0.0014409,0.0057709 alpha,1974.5, T7/DB,0.00010121,0.0063837 alpha,1975.5, T7/DB,-0.0012385,0.0069965 alpha,1976.5, T7/DB,-0.0025893,0.0067343 alpha,1977.5, T7/DB,-0.0039401,0.0064721 alpha,1978.5, T7/DB,-0.0052909,0.0062098 alpha,1979.5, T7/DB,-0.0043239,0.0068575 alpha,1980.5, T7/DB,-0.0033569,0.0075052 alpha,1981.5, T7/DB,-0.0023898,0.0081529 alpha,1982.5, T7/DB,-0.0014228,0.0088007 alpha,1983.5, T7/DB,-0.00085628,0.0075144 alpha,1984.5, T7/DB,-0.00028973,0.0062281 alpha,1985.5, T7/DB,0.00027681,0.0049418 alpha,1986.5, T7/DB,0.00084335,0.0036555 alpha,1987.5, T7/DB,0.0028781,0.004719 alpha,1988.5, T7/DB,0.0049129,0.0057826 alpha,1989.5, T7/DB,0.003695,0.0044616 alpha,1990.5, T7/DB,0.0024772,0.0031407 alpha,1991.5, T7/DB,0.0012386,0.0029425 alpha,1992.5, T7/DB,0,0.0027443 alpha,1993.5, T7/DB,0.0011855,0.0039286 alpha,1994.5, T7/DB,0.0023711,0.0051128 alpha,1995.5, T7/DB,0.0035566,0.006297 alpha,1996.5, T7/DB,0.0037487,0.0053225 alpha,1997.5, T7/DB,0.0039409,0.0043479 alpha,1998.5, T7/DB,0.004133,0.0033734 alpha,1999.5, T7/DB,0.0041147,0.0031655 alpha,2000.5, T7/DB,0.0040963,0.0029575 alpha,2001.5, T7/DB,0.0064673,0.0026029 alpha,2002.5, T7/DB,0.0088384,0.0022484 alpha,2003.5, T7/DB,0.011539,0.0017356 alpha,2004.5, T7/DB,0.014239,0.0012228 alpha,2005.5, T7/DB,0.014695,0.0022218 alpha,2006.5, T7/DB,0.015151,0.0032208 alpha,2007.5, T7/DB,0.01252,0.0025973 alpha,2008.5, T7/DB,0.0098897,0.0019738 alpha,2009.5, T7/DB,0.011681,0.0027063 alpha,2010.5, T7/DB,0.013472,0.0034387 alpha,1967.5, TSK T6, NaN, NaN alpha,1968.5, TSK T6, NaN, NaN alpha,1969.5, TSK T6, NaN, NaN alpha,1970.5, TSK T6, NaN, NaN alpha,1971.5, TSK T6, NaN, NaN alpha,1972.5, TSK T6, NaN, NaN alpha,1973.5, TSK T6, NaN, NaN alpha,1974.5, TSK T6,0.036122,0.012465 alpha,1975.5, TSK T6,0.043292,0.0090804 alpha,1976.5, TSK T6,0.050463,0.0056959 alpha,1977.5, TSK T6,0.051908,0.0095078 alpha,1978.5, TSK T6,0.053353,0.01332 alpha,1979.5, TSK T6,0.051674,0.013312 alpha,1980.5, TSK T6,0.049995,0.013305 alpha,1981.5, TSK T6,0.048316,0.013298 alpha,1982.5, TSK T6,0.046637,0.01329 alpha,1983.5, TSK T6,0.044958,0.013283 alpha,1984.5, TSK T6,0.043279,0.013276 alpha,1985.5, TSK T6,0.041601,0.013268 alpha,1986.5, TSK T6,0.039922,0.013261 alpha,1987.5, TSK T6, NaN, NaN alpha,1988.5, TSK T6, NaN, NaN alpha,1989.5, TSK T6, NaN, NaN alpha,1990.5, TSK T6, NaN, NaN alpha,1991.5, TSK T6, NaN, NaN alpha,1992.5, TSK T6, NaN, NaN alpha,1993.5, TSK T6, NaN, NaN alpha,1994.5, TSK T6, NaN, NaN alpha,1995.5, TSK T6, NaN, NaN alpha,1996.5, TSK T6, NaN, NaN alpha,1997.5, TSK T6, NaN, NaN alpha,1998.5, TSK T6, NaN, NaN alpha,1999.5, TSK T6, NaN, NaN alpha,2000.5, TSK T6, NaN, NaN alpha,2001.5, TSK T6, NaN, NaN alpha,2002.5, TSK T6, NaN, NaN alpha,2003.5, TSK T6, NaN, NaN alpha,2004.5, TSK T6, NaN, NaN alpha,2005.5, TSK T6, NaN, NaN alpha,2006.5, TSK T6, NaN, NaN alpha,2007.5, TSK T6, NaN, NaN alpha,2008.5, TSK T6, NaN, NaN alpha,2009.5, TSK T6, NaN, NaN alpha,2010.5, TSK T6, NaN, NaN alpha,1967.5,TSK T7/DB, NaN, NaN alpha,1968.5,TSK T7/DB, NaN, NaN alpha,1969.5,TSK T7/DB, NaN, NaN alpha,1970.5,TSK T7/DB, NaN, NaN alpha,1971.5,TSK T7/DB, NaN, NaN alpha,1972.5,TSK T7/DB, NaN, NaN alpha,1973.5,TSK T7/DB, NaN, NaN alpha,1974.5,TSK T7/DB, NaN, NaN alpha,1975.5,TSK T7/DB, NaN, NaN alpha,1976.5,TSK T7/DB, NaN, NaN alpha,1977.5,TSK T7/DB, NaN, NaN alpha,1978.5,TSK T7/DB, NaN, NaN alpha,1979.5,TSK T7/DB, NaN, NaN alpha,1980.5,TSK T7/DB, NaN, NaN alpha,1981.5,TSK T7/DB, NaN, NaN alpha,1982.5,TSK T7/DB, NaN, NaN alpha,1983.5,TSK T7/DB, NaN, NaN alpha,1984.5,TSK T7/DB, NaN, NaN alpha,1985.5,TSK T7/DB, NaN, NaN alpha,1986.5,TSK T7/DB, NaN, NaN alpha,1987.5,TSK T7/DB,0.011356,0.0069086 alpha,1988.5,TSK T7/DB,0.010968,0.0068269 alpha,1989.5,TSK T7/DB,0.01058,0.0067452 alpha,1990.5,TSK T7/DB,0.010191,0.0066634 alpha,1991.5,TSK T7/DB,0.0098033,0.0065817 alpha,1992.5,TSK T7/DB,0.0094152,0.0065 alpha,1993.5,TSK T7/DB,0.009027,0.0064182 alpha,1994.5,TSK T7/DB,0.0086389,0.0063365 alpha,1995.5,TSK T7/DB,0.0082508,0.0062548 alpha,1996.5,TSK T7/DB,0.0078626,0.006173 alpha,1997.5,TSK T7/DB,0.0074745,0.0060913 alpha,1998.5,TSK T7/DB,0.0070864,0.0060096 alpha,1999.5,TSK T7/DB,0.0066982,0.0059278 alpha,2000.5, TSK T7/DB,0.0063101,0.0058461 alpha,2001.5,TSK T7/DB, NaN, NaN alpha,2002.5,TSK T7/DB, NaN, NaN alpha,2003.5,TSK T7/DB, NaN, NaN alpha,2004.5,TSK T7/DB, NaN, NaN alpha,2005.5,TSK T7/DB, NaN, NaN alpha,2006.5,TSK T7/DB, NaN, NaN alpha,2007.5,TSK T7/DB, NaN, NaN alpha,2008.5,TSK T7/DB, NaN, NaN alpha,2009.5,TSK T7/DB, NaN, NaN alpha,2010.5,TSK T7/DB, NaN, NaN