Year,Fall_kg_tow,Spring_kg_tow,Mean_yr_6388,spr_mean_6388,fall_mean_yr_6388,mean_yr_9505,spr_mean_9505,fall_mean_9505
1963,0.054,,1963,,0.360730769,1995,0.189144545,0.148618245
1964,0.273,,1964,,0.360730769,1996,0.189144545,0.148618245
1965,0.452,,1965,,0.360730769,1997,0.189144545,0.148618245
1966,0.404,,1966,,0.360730769,1998,0.189144545,0.148618245
1967,0.318,,1967,,0.360730769,1999,0.189144545,0.148618245
1968,0.458,0.916,1968,1.483857143,0.360730769,2000,0.189144545,0.148618245
1969,0.059,1.152,1969,1.483857143,0.360730769,2001,0.189144545,0.148618245
1970,0.667,1.954,1970,1.483857143,0.360730769,2002,0.189144545,0.148618245
1971,0.566,1.744,1971,1.483857143,0.360730769,2003,0.189144545,0.148618245
1972,0.283,1.217,1972,1.483857143,0.360730769,2004,0.189144545,0.148618245
1973,0.294,1.741,1973,1.483857143,0.360730769,2005,0.189144545,0.148618245
1974,0.246,2.491,1974,1.483857143,0.360730769,,,
1975,0.322,1.698,1975,1.483857143,0.360730769,,,
1976,0.189,1.231,1976,1.483857143,0.360730769,,,
1977,0.452,1.018,1977,1.483857143,0.360730769,,,
1978,0.562,1.715,1978,1.483857143,0.360730769
1979,0.63,2.017,1979,1.483857143,0.360730769
1980,0.295,1.529,1980,1.483857143,0.360730769
1981,1.134,1.764,1981,1.483857143,0.360730769
1982,0.031,1.057,1982,1.483857143,0.360730769
1983,0.45,1.664,1983,1.483857143,0.360730769
1984,0.127,1.085,1984,1.483857143,0.360730769
1985,0.451,1.747,1985,1.483857143,0.360730769
1986,0.414,1.507,1986,1.483857143,0.360730769
1987,0.146,1.115,1987,1.483857143,0.360730769
1988,0.102,0.799,1988,1.483857143,0.360730769
1989,0.141,0.553,,,
1990,0.252,0.442,,,
1991,0.325,0.366,,,
1992,0.268,0.243,,,
1993,0.427,0.795,,,
1994,0.293,0.197
1995,0.431,0.216
1996,0.199,0.263
1997,0.259,0.095
1998,0.066,0.105
1999,0.186,0.159
2000,0.025,0.294
2001,0.161,0.063
2002,0.158,0.223
2003,0.105,0.212
2004,0.021,0.261
2005,0.0238007,0.18959