coefficient,year,probe type,median,stderr beta,1967.5, T4/T6,0.52215,1.276 beta,1968.5, T4/T6,0.35828,1.3613 beta,1969.5, T4/T6,0.19441,1.4467 beta,1970.5, T4/T6,0.030549,1.532 beta,1971.5, T4/T6,-0.13332,1.6174 beta,1972.5, T4/T6,0.013619,1.4166 beta,1973.5, T4/T6,0.16055,1.2159 beta,1974.5, T4/T6,0.30749,1.0152 beta,1975.5, T4/T6,-0.050314,1.2173 beta,1976.5, T4/T6,-0.40812,1.4195 beta,1977.5, T4/T6,-0.33342,1.3776 beta,1978.5, T4/T6,-0.25873,1.3357 beta,1979.5, T4/T6,-0.18403,1.2939 beta,1980.5, T4/T6,-0.10934,1.252 beta,1981.5, T4/T6,-0.034645,1.2101 beta,1982.5, T4/T6,0.15437,1.2316 beta,1983.5, T4/T6,0.34338,1.253 beta,1984.5, T4/T6,0.53239,1.2745 beta,1985.5, T4/T6,0.7214,1.2959 beta,1986.5, T4/T6,0.91041,1.3174 beta,1987.5, T4/T6,0.28871,1.2128 beta,1988.5, T4/T6,-0.33298,1.1082 beta,1989.5, T4/T6,0.64527,1.2216 beta,1990.5, T4/T6,1.6235,1.3349 beta,1991.5, T4/T6,1.238,1.081 beta,1992.5, T4/T6,0.85246,0.82711 beta,1993.5, T4/T6,0.91812,0.82033 beta,1994.5, T4/T6,0.98379,0.81356 beta,1995.5, T4/T6,1.0495,0.80678 beta,1996.5, T4/T6,1.1151,0.8 beta,1997.5, T4/T6,1.1808,0.79322 beta,1998.5, T4/T6,1.2464,0.78644 beta,1999.5, T4/T6,1.3121,0.77967 beta,2000.5, T4/T6,1.3778,0.77289 beta,2001.5, T4/T6,1.4434,0.76611 beta,2002.5, T4/T6, NaN, NaN beta,2003.5, T4/T6, NaN, NaN beta,2004.5, T4/T6, NaN, NaN beta,2005.5, T4/T6, NaN, NaN beta,2006.5, T4/T6, NaN, NaN beta,2007.5, T4/T6, NaN, NaN beta,2008.5, T4/T6, NaN, NaN beta,2009.5, T4/T6, NaN, NaN beta,2010.5, T4/T6, NaN, NaN beta,1967.5, T7/DB, NaN, NaN beta,1968.5, T7/DB, NaN, NaN beta,1969.5, T7/DB, NaN, NaN beta,1970.5, T7/DB,-1.4778,1.0061 beta,1971.5, T7/DB,-0.75909,1.1591 beta,1972.5, T7/DB,-0.040397,1.312 beta,1973.5, T7/DB,0.67829,1.4649 beta,1974.5, T7/DB,1.397,1.6178 beta,1975.5, T7/DB,2.1157,1.7708 beta,1976.5, T7/DB,1.2925,1.7042 beta,1977.5, T7/DB,0.46933,1.6376 beta,1978.5, T7/DB,-0.35383,1.571 beta,1979.5, T7/DB,-0.041327,1.5592 beta,1980.5, T7/DB,0.27118,1.5474 beta,1981.5, T7/DB,0.58369,1.5355 beta,1982.5, T7/DB,0.89619,1.5237 beta,1983.5, T7/DB,0.7447,1.2965 beta,1984.5, T7/DB,0.59321,1.0692 beta,1985.5, T7/DB,0.44171,0.84195 beta,1986.5, T7/DB,0.29022,0.6147 beta,1987.5, T7/DB,0.33581,0.87003 beta,1988.5, T7/DB,0.38141,1.1254 beta,1989.5, T7/DB,0.4997,0.85272 beta,1990.5, T7/DB,0.61799,0.5801 beta,1991.5, T7/DB,0.94053,0.66155 beta,1992.5, T7/DB,1.2631,0.743 beta,1993.5, T7/DB,1.0737,0.80037 beta,1994.5, T7/DB,0.88435,0.85774 beta,1995.5, T7/DB,0.69499,0.91511 beta,1996.5, T7/DB,1.0108,0.81259 beta,1997.5, T7/DB,1.3266,0.71007 beta,1998.5, T7/DB,1.6424,0.60756 beta,1999.5, T7/DB,1.345,0.62114 beta,2000.5, T7/DB,1.0477,0.63472 beta,2001.5, T7/DB,1.3954,0.60198 beta,2002.5, T7/DB,1.7431,0.56923 beta,2003.5, T7/DB,2.2617,0.41163 beta,2004.5, T7/DB,2.7804,0.25402 beta,2005.5, T7/DB,1.554,0.56654 beta,2006.5, T7/DB,0.32755,0.87906 beta,2007.5, T7/DB,0.56202,0.65255 beta,2008.5, T7/DB,0.79649,0.42604 beta,2009.5, T7/DB,1.8972,0.55855 beta,2010.5, T7/DB,2.998,0.69107 beta,1967.5, TSK T6, NaN, NaN beta,1968.5, TSK T6, NaN, NaN beta,1969.5, TSK T6, NaN, NaN beta,1970.5, TSK T6, NaN, NaN beta,1971.5, TSK T6, NaN, NaN beta,1972.5, TSK T6, NaN, NaN beta,1973.5, TSK T6, NaN, NaN beta,1974.5, TSK T6,-0.33152,1.559 beta,1975.5, TSK T6,-0.8937,1.1946 beta,1976.5, TSK T6,-1.4559,0.83022 beta,1977.5, TSK T6,-0.87729,1.1577 beta,1978.5, TSK T6,-0.29871,1.4852 beta,1979.5, TSK T6,-0.30053,1.4356 beta,1980.5, TSK T6,-0.30234,1.3859 beta,1981.5, TSK T6,-0.30416,1.3363 beta,1982.5, TSK T6,-0.30597,1.2866 beta,1983.5, TSK T6,-0.30778,1.2369 beta,1984.5, TSK T6,-0.3096,1.1873 beta,1985.5, TSK T6,-0.31141,1.1376 beta,1986.5, TSK T6,-0.31323,1.088 beta,1987.5, TSK T6, NaN, NaN beta,1988.5, TSK T6, NaN, NaN beta,1989.5, TSK T6, NaN, NaN beta,1990.5, TSK T6, NaN, NaN beta,1991.5, TSK T6, NaN, NaN beta,1992.5, TSK T6, NaN, NaN beta,1993.5, TSK T6, NaN, NaN beta,1994.5, TSK T6, NaN, NaN beta,1995.5, TSK T6, NaN, NaN beta,1996.5, TSK T6, NaN, NaN beta,1997.5, TSK T6, NaN, NaN beta,1998.5, TSK T6, NaN, NaN beta,1999.5, TSK T6, NaN, NaN beta,2000.5, TSK T6, NaN, NaN beta,2001.5, TSK T6, NaN, NaN beta,2002.5, TSK T6, NaN, NaN beta,2003.5, TSK T6, NaN, NaN beta,2004.5, TSK T6, NaN, NaN beta,2005.5, TSK T6, NaN, NaN beta,2006.5, TSK T6, NaN, NaN beta,2007.5, TSK T6, NaN, NaN beta,2008.5, TSK T6, NaN, NaN beta,2009.5, TSK T6, NaN, NaN beta,2010.5, TSK T6, NaN, NaN beta,1967.5,TSK T7/DB, NaN, NaN beta,1968.5,TSK T7/DB, NaN, NaN beta,1969.5,TSK T7/DB, NaN, NaN beta,1970.5,TSK T7/DB, NaN, NaN beta,1971.5,TSK T7/DB, NaN, NaN beta,1972.5,TSK T7/DB, NaN, NaN beta,1973.5,TSK T7/DB, NaN, NaN beta,1974.5,TSK T7/DB, NaN, NaN beta,1975.5,TSK T7/DB, NaN, NaN beta,1976.5,TSK T7/DB, NaN, NaN beta,1977.5,TSK T7/DB, NaN, NaN beta,1978.5,TSK T7/DB, NaN, NaN beta,1979.5,TSK T7/DB, NaN, NaN beta,1980.5,TSK T7/DB, NaN, NaN beta,1981.5,TSK T7/DB, NaN, NaN beta,1982.5,TSK T7/DB, NaN, NaN beta,1983.5,TSK T7/DB, NaN, NaN beta,1984.5,TSK T7/DB, NaN, NaN beta,1985.5,TSK T7/DB, NaN, NaN beta,1986.5,TSK T7/DB, NaN, NaN beta,1987.5,TSK T7/DB,-2.6592,1.4195 beta,1988.5,TSK T7/DB,-2.7183,1.406 beta,1989.5,TSK T7/DB,-2.7775,1.3926 beta,1990.5,TSK T7/DB,-2.8366,1.3791 beta,1991.5,TSK T7/DB,-2.8958,1.3657 beta,1992.5,TSK T7/DB,-2.955,1.3522 beta,1993.5,TSK T7/DB,-3.0141,1.3388 beta,1994.5,TSK T7/DB,-3.0733,1.3253 beta,1995.5,TSK T7/DB,-3.1325,1.3119 beta,1996.5,TSK T7/DB,-3.1916,1.2984 beta,1997.5,TSK T7/DB,-3.2508,1.285 beta,1998.5,TSK T7/DB,-3.31,1.2715 beta,1999.5,TSK T7/DB,-3.3691,1.2581 beta,2000.5,TSK T7/DB,-3.4283,1.2447 beta,2001.5,TSK T7/DB, NaN, NaN beta,2002.5,TSK T7/DB, NaN, NaN beta,2003.5,TSK T7/DB, NaN, NaN beta,2004.5,TSK T7/DB, NaN, NaN beta,2005.5,TSK T7/DB, NaN, NaN beta,2006.5,TSK T7/DB, NaN, NaN beta,2007.5,TSK T7/DB, NaN, NaN beta,2008.5,TSK T7/DB, NaN, NaN beta,2009.5,TSK T7/DB, NaN, NaN beta,2010.5,TSK T7/DB, NaN, NaN