Thermal offset (degC) as a function of time for XBTS and XBTD, and western
Pacific XBTs (north of 20degS and west of 180degE).

 Year   ToffD ToffS  ToffWP 
 
 1968, 0.049, 0.084,-0.006
 1969, 0.052, 0.083, 0.002
 1970, 0.051, 0.080, 0.020
 1971, 0.067, 0.084, 0.036
 1972, 0.081, 0.087, 0.043
 1973, 0.090, 0.087, 0.049
 1974, 0.098, 0.091, 0.055
 1975, 0.096, 0.098, 0.056
 1976, 0.089, 0.105, 0.051
 1977, 0.079, 0.112, 0.051
 1978, 0.070, 0.118, 0.055
 1979, 0.059, 0.121, 0.050
 1980, 0.059, 0.119, 0.047
 1981, 0.061, 0.109, 0.039
 1982, 0.062, 0.099, 0.031
 1983, 0.054, 0.089, 0.019
 1984, 0.056, 0.082, 0.014
 1985, 0.056, 0.077, 0.004
 1986, 0.053, 0.077, 
 1987, 0.049, 0.073, 
 1988, 0.058, 0.062, 
 1989, 0.056, 0.049, 
 1990, 0.049, 0.034, 
 1991, 0.047, 0.021, 
 1992, 0.051, 0.011, 
 1993, 0.051, 0.009, 
 1994, 0.059, 0.011, 
 1995, 0.074, 0.015, 
 1996, 0.087, 0.014, 
 1997, 0.090, 0.011, 
 1998, 0.093, 0.005, 
 1999, 0.093, 0.000, 
 2000, 0.082,-0.014, 
 2001, 0.066,-0.036, 
 2002, 0.058,-0.020, 
 2003, 0.048, 0.006, 
 2004, 0.037, 0.018, 
 2005, 0.031, 0.027, 
 2006, 0.032, 0.043, 
 2007, 0.029, 0.008,