** date ** baggeren ** storten ** zandwinning ** wrak ** totaal ** cumulatief == 01/01/1955 NaN NaN NaN NaN NaN 0.000000E+000 31/12/1955 -3.694050E+006 3.844109E+006 NaN NaN 1.500591E+005 1.500591E+005 31/12/1956 -3.341805E+006 3.391495E+006 -6.042600E+005 NaN -5.545691E+005 -4.045100E+005 31/12/1957 -3.140864E+006 3.101450E+006 -5.039191E+005 NaN -5.433327E+005 -9.478427E+005 31/12/1958 -3.487264E+006 3.442864E+006 -1.973355E+005 NaN -2.417355E+005 -1.189578E+006 31/12/1959 -3.427895E+006 3.289350E+006 -3.020173E+005 NaN -4.405627E+005 -1.630141E+006 31/12/1960 -3.699045E+006 3.679502E+006 -7.165809E+005 NaN -7.361236E+005 -2.366265E+006 31/12/1961 -4.203265E+006 4.080810E+006 -1.264360E+006 NaN -1.386815E+006 -3.753080E+006 31/12/1962 -4.831310E+006 4.765494E+006 -1.322090E+006 NaN -1.387906E+006 -5.140986E+006 31/12/1963 -4.551149E+006 4.523992E+006 -6.825936E+005 NaN -7.097509E+005 -5.850737E+006 31/12/1964 -5.025875E+006 5.025269E+006 -8.127418E+005 NaN -8.133482E+005 -6.664085E+006 31/12/1965 -3.586616E+006 3.607844E+006 -2.707495E+006 NaN -2.686268E+006 -9.350353E+006 31/12/1966 -2.820372E+006 2.476091E+006 -3.322270E+006 NaN -3.666551E+006 -1.301690E+007 31/12/1967 -4.288316E+006 4.287185E+006 -3.346069E+006 NaN -3.347200E+006 -1.636410E+007 31/12/1968 -3.067993E+006 3.067993E+006 -1.337295E+006 NaN -1.337295E+006 -1.770140E+007 31/12/1969 -5.068648E+006 4.674232E+006 -4.925425E+006 NaN -5.319842E+006 -2.302124E+007 31/12/1970 -4.705519E+006 4.221815E+006 -2.391313E+006 NaN -2.875017E+006 -2.589626E+007 31/12/1971 -6.174729E+006 4.850553E+006 -1.822845E+006 NaN -3.147021E+006 -2.904328E+007 31/12/1972 -6.510414E+006 5.055399E+006 -2.319301E+006 NaN -3.774315E+006 -3.281759E+007 31/12/1973 -7.731057E+006 6.380184E+006 -3.593666E+006 NaN -4.944540E+006 -3.776213E+007 31/12/1974 -1.015012E+007 8.335206E+006 -2.574027E+006 NaN -4.388937E+006 -4.215107E+007 31/12/1975 -1.219805E+007 9.574089E+006 -2.339378E+006 NaN -4.963343E+006 -4.711441E+007 31/12/1976 -1.277766E+007 9.694568E+006 -3.041465E+006 NaN -6.124561E+006 -5.323898E+007 31/12/1977 -8.689235E+006 7.769489E+006 -3.591846E+006 NaN -4.511592E+006 -5.775057E+007 31/12/1978 -1.078883E+007 1.056113E+007 -3.209995E+006 NaN -3.437691E+006 -6.118826E+007 31/12/1979 -1.107473E+007 1.029965E+007 -1.916561E+006 NaN -2.691637E+006 -6.387990E+007 31/12/1980 -1.026920E+007 9.694268E+006 -2.589321E+006 NaN -3.164249E+006 -6.704415E+007 31/12/1981 -9.845216E+006 9.564968E+006 -1.346485E+006 NaN -1.626734E+006 -6.867088E+007 31/12/1982 -1.097563E+007 1.106350E+007 -1.381937E+006 NaN -1.294066E+006 -6.996494E+007 31/12/1983 -6.991291E+006 7.748716E+006 -3.734721E+006 NaN -2.977296E+006 -7.294224E+007 31/12/1984 -7.880176E+006 8.147617E+006 -3.450616E+006 NaN -3.183175E+006 -7.612542E+007 31/12/1985 -9.440902E+006 9.729447E+006 -3.048810E+006 NaN -2.760265E+006 -7.888568E+007 31/12/1986 -9.719843E+006 1.062071E+007 -3.426399E+006 NaN -2.525533E+006 -8.141121E+007 31/12/1987 -1.074933E+007 1.037991E+007 -1.940007E+006 NaN -2.309429E+006 -8.372064E+007 31/12/1988 -1.015597E+007 9.656028E+006 -2.305616E+006 NaN -2.805557E+006 -8.652620E+007 31/12/1989 -9.083475E+006 7.999689E+006 -3.239359E+006 NaN -4.323145E+006 -9.084934E+007 31/12/1990 -6.494912E+006 6.548452E+006 -1.730100E+006 NaN -1.676560E+006 -9.252590E+007 31/12/1991 -8.122609E+006 8.038537E+006 -1.809888E+006 NaN -1.893960E+006 -9.441986E+007 31/12/1992 -6.960552E+006 6.959095E+006 -1.991671E+006 NaN -1.993127E+006 -9.641299E+007 31/12/1993 -7.519650E+006 6.687966E+006 -2.108453E+006 NaN -2.940137E+006 -9.935313E+007 31/12/1994 -8.329362E+006 8.264835E+006 -2.005330E+006 NaN -2.069857E+006 -1.014230E+008 31/12/1995 -8.880733E+006 8.902761E+006 -1.606455E+006 NaN -1.584427E+006 -1.030074E+008 31/12/1996 -8.950308E+006 8.888949E+006 -1.111928E+006 NaN -1.173288E+006 -1.041807E+008 31/12/1997 -1.019394E+007 9.913978E+006 -1.418837E+006 NaN -1.698797E+006 -1.058795E+008 31/12/1998 -1.276407E+007 1.295181E+007 -1.909076E+006 NaN -1.721336E+006 -1.076008E+008 31/12/1999 -1.220595E+007 1.114730E+007 -2.540608E+006 0.000000E+000 -3.599258E+006 -1.112001E+008 31/12/2000 -9.553722E+006 9.575352E+006 -2.601966E+006 0.000000E+000 -2.580336E+006 -1.137804E+008 31/12/2001 -9.707182E+006 9.809552E+006 -1.924330E+006 NaN -1.821960E+006 -1.156024E+008 31/12/2002 -7.275102E+006 7.300425E+006 -1.523119E+006 NaN -1.497796E+006 -1.171002E+008 31/12/2003 -6.505187E+006 6.517169E+006 -1.616298E+006 0.000000E+000 -1.604315E+006 -1.187045E+008 31/12/2004 -6.899092E+006 6.213094E+006 -1.696011E+006 NaN -2.382009E+006 -1.210865E+008 31/12/2005 -6.158341E+006 5.882431E+006 -1.512842E+006 NaN -1.788752E+006 -1.228753E+008 31/12/2006 -5.684846E+006 5.416335E+006 -1.441944E+006 NaN -1.710455E+006 -1.245857E+008 31/12/2007 -5.408938E+006 5.287430E+006 -1.421395E+006 NaN -1.542903E+006 -1.261286E+008 31/12/2008 -6.484167E+006 5.952211E+006 -1.619339E+006 NaN -2.151295E+006 -1.282799E+008