** date ** baggeren ** storten ** zandwinning ** wrak ** totaal ** cumulatief == 01/01/1955 NaN NaN NaN NaN NaN 0.000000E+000 31/12/1955 NaN NaN NaN NaN NaN 0.000000E+000 31/12/1956 NaN NaN -3.370576E+004 NaN -3.370576E+004 -3.370576E+004 31/12/1957 NaN NaN -2.484818E+004 NaN -2.484818E+004 -5.855394E+004 31/12/1958 NaN NaN -3.204252E+004 NaN -3.204252E+004 -9.059647E+004 31/12/1959 NaN NaN -1.694149E+004 NaN -1.694149E+004 -1.075380E+005 31/12/1960 NaN NaN -4.083412E+005 NaN -4.083412E+005 -5.158792E+005 31/12/1961 NaN NaN -3.426672E+004 NaN -3.426672E+004 -5.501459E+005 31/12/1962 NaN NaN -2.262955E+005 NaN -2.262955E+005 -7.764414E+005 31/12/1963 NaN NaN -5.771791E+005 NaN -5.771791E+005 -1.353620E+006 31/12/1964 NaN NaN -2.728358E+005 NaN -2.728358E+005 -1.626456E+006 31/12/1965 NaN NaN -1.066969E+005 NaN -1.066969E+005 -1.733153E+006 31/12/1966 NaN NaN -7.745830E+005 NaN -7.745830E+005 -2.507736E+006 31/12/1967 NaN NaN -1.354373E+006 NaN -1.354373E+006 -3.862110E+006 31/12/1968 NaN NaN -1.592447E+005 NaN -1.592447E+005 -4.021354E+006 31/12/1969 -3.707803E+005 9.333241E+004 -8.196881E+005 NaN -1.097136E+006 -5.118490E+006 31/12/1970 -1.070674E+005 8.099975E+003 -7.880402E+005 NaN -8.870076E+005 -6.005498E+006 31/12/1971 -2.340689E+005 7.671522E+005 -2.850924E+005 NaN 2.479909E+005 -5.757507E+006 31/12/1972 -3.233994E+005 1.196623E+006 -1.782787E+006 NaN -9.095633E+005 -6.667070E+006 31/12/1973 -1.138913E+006 1.213941E+006 -2.569697E+006 NaN -2.494669E+006 -9.161739E+006 31/12/1974 -8.524302E+005 2.447116E+006 -8.685950E+005 NaN 7.260907E+005 -8.435648E+006 31/12/1975 -1.520582E+006 1.366425E+006 -4.389816E+005 NaN -5.931390E+005 -9.028787E+006 31/12/1976 -1.662988E+006 1.641410E+006 -1.132291E+006 NaN -1.153869E+006 -1.018266E+007 31/12/1977 -4.883855E+005 4.883855E+005 -2.322966E+006 NaN -2.322966E+006 -1.250562E+007 31/12/1978 -2.402198E+006 2.387667E+006 -7.586010E+005 NaN -7.731319E+005 -1.327875E+007 31/12/1979 -1.195210E+006 1.354630E+006 -3.505492E+005 NaN -1.911295E+005 -1.346988E+007 31/12/1980 -1.225956E+006 2.418824E+006 -2.891100E+005 NaN 9.037580E+005 -1.256613E+007 31/12/1981 -8.734509E+005 1.743649E+006 -2.722822E+005 NaN 5.979158E+005 -1.196821E+007 31/12/1982 -7.124618E+005 9.926489E+005 -3.353581E+005 NaN -5.517098E+004 -1.202338E+007 31/12/1983 -1.044653E+006 1.179405E+006 -1.425087E+006 NaN -1.290335E+006 -1.331372E+007 31/12/1984 -1.029111E+006 9.838063E+005 -8.804395E+005 NaN -9.257441E+005 -1.423946E+007 31/12/1985 -1.400352E+006 1.081711E+006 -3.864764E+005 NaN -7.051174E+005 -1.494458E+007 31/12/1986 -8.281609E+005 4.847152E+005 -1.148659E+006 NaN -1.492105E+006 -1.643668E+007 31/12/1987 -4.194836E+005 4.913338E+005 -5.182964E+005 NaN -4.464463E+005 -1.688313E+007 31/12/1988 -4.725418E+005 2.317664E+005 -3.880016E+005 NaN -6.287770E+005 -1.751191E+007 31/12/1989 -6.407873E+005 3.255364E+005 -4.433763E+005 NaN -7.586272E+005 -1.827053E+007 31/12/1990 -6.991691E+005 3.607845E+005 -4.004811E+005 NaN -7.388657E+005 -1.900940E+007 31/12/1991 -8.278864E+005 4.189018E+005 -3.572882E+005 NaN -7.662727E+005 -1.977567E+007 31/12/1992 -7.639964E+005 4.526352E+005 -3.983382E+005 NaN -7.096994E+005 -2.048537E+007 31/12/1993 -6.034055E+005 1.427205E+006 -3.341191E+005 NaN 4.896809E+005 -1.999569E+007 31/12/1994 -7.743464E+005 4.882091E+005 -2.672656E+005 NaN -5.534029E+005 -2.054909E+007 31/12/1995 -1.082077E+006 8.390369E+005 -1.805687E+005 NaN -4.236091E+005 -2.097270E+007 31/12/1996 -7.307273E+005 7.075850E+005 -1.195800E+005 NaN -1.427223E+005 -2.111542E+007 31/12/1997 -1.884645E+006 3.983270E+006 -1.818895E+005 NaN 1.916735E+006 -1.919869E+007 31/12/1998 -2.131102E+006 6.368703E+006 -1.889960E+005 NaN 4.048605E+006 -1.515008E+007 31/12/1999 -1.584218E+006 3.273756E+006 -2.090491E+005 NaN 1.480489E+006 -1.366959E+007 31/12/2000 -1.393369E+006 2.884256E+006 -2.328355E+005 NaN 1.258051E+006 -1.241154E+007 31/12/2001 -1.302696E+006 2.720342E+006 -2.147964E+005 NaN 1.202850E+006 -1.120869E+007 31/12/2002 -1.970333E+006 2.255974E+006 -1.951609E+005 NaN 9.047958E+004 -1.111821E+007 31/12/2003 -1.074381E+006 9.003073E+005 -2.028689E+005 -4.821627E+005 -8.591049E+005 -1.197732E+007 31/12/2004 -1.227199E+006 2.264869E+006 -2.164584E+005 NaN 8.212113E+005 -1.115611E+007 31/12/2005 -1.417109E+006 3.471304E+006 -1.818973E+005 NaN 1.872297E+006 -9.283810E+006 31/12/2006 -1.356245E+006 1.938399E+006 -2.912827E+005 NaN 2.908709E+005 -8.992939E+006 31/12/2007 -1.205358E+006 2.844454E+006 -1.255473E+005 NaN 1.513549E+006 -7.479390E+006 31/12/2008 -1.263504E+006 1.214789E+006 -2.659264E+005 NaN -3.146409E+005 -7.794031E+006