** 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 -3.071012E+005 NaN -2.574103E+005 -1.073512E+005 31/12/1957 -3.140864E+006 3.101450E+006 -1.316091E+005 NaN -1.710227E+005 -2.783739E+005 31/12/1958 -3.487264E+006 3.442864E+006 -1.759262E+005 NaN -2.203262E+005 -4.987001E+005 31/12/1959 -3.427895E+006 3.289350E+006 -2.898560E+005 NaN -4.284015E+005 -9.271016E+005 31/12/1960 -3.699045E+006 3.679502E+006 -6.856757E+005 NaN -7.052185E+005 -1.632320E+006 31/12/1961 -4.203265E+006 4.080810E+006 -1.244438E+006 NaN -1.366893E+006 -2.999213E+006 31/12/1962 -4.831310E+006 4.765494E+006 -1.235679E+006 NaN -1.301496E+006 -4.300709E+006 31/12/1963 -4.551149E+006 4.523992E+006 -6.409664E+005 NaN -6.681237E+005 -4.968832E+006 31/12/1964 -5.025875E+006 5.025269E+006 -7.722995E+005 NaN -7.729058E+005 -5.741738E+006 31/12/1965 -3.586616E+006 3.607844E+006 -2.078180E+006 NaN -2.056952E+006 -7.798690E+006 31/12/1966 -2.820372E+006 2.476091E+006 -3.292250E+006 NaN -3.636531E+006 -1.143522E+007 31/12/1967 -4.288316E+006 4.287185E+006 -3.218643E+006 NaN -3.219774E+006 -1.465500E+007 31/12/1968 -3.067993E+006 3.067993E+006 -9.805410E+005 NaN -9.805410E+005 -1.563554E+007 31/12/1969 -5.068648E+006 4.669985E+006 -4.649207E+006 NaN -5.047871E+006 -2.068341E+007 31/12/1970 -4.705519E+006 4.221446E+006 -2.241982E+006 NaN -2.726055E+006 -2.340946E+007 31/12/1971 -6.174729E+006 4.850553E+006 -1.665042E+006 NaN -2.989218E+006 -2.639868E+007 31/12/1972 -6.510414E+006 5.055399E+006 -2.124189E+006 NaN -3.579204E+006 -2.997788E+007 31/12/1973 -7.731057E+006 6.380184E+006 -3.471140E+006 NaN -4.822014E+006 -3.479990E+007 31/12/1974 -1.015012E+007 8.335206E+006 -2.458159E+006 NaN -4.273069E+006 -3.907297E+007 31/12/1975 -1.219805E+007 9.574089E+006 -2.187199E+006 NaN -4.811163E+006 -4.388413E+007 31/12/1976 -1.277766E+007 9.694568E+006 -2.891914E+006 NaN -5.975011E+006 -4.985914E+007 31/12/1977 -8.689235E+006 7.769489E+006 -3.485857E+006 NaN -4.405603E+006 -5.426474E+007 31/12/1978 -1.078883E+007 1.056113E+007 -3.076559E+006 NaN -3.304256E+006 -5.756900E+007 31/12/1979 -1.107473E+007 1.029965E+007 -1.790874E+006 NaN -2.565950E+006 -6.013495E+007 31/12/1980 -1.026920E+007 9.694268E+006 -2.455630E+006 NaN -3.030559E+006 -6.316551E+007 31/12/1981 -9.845216E+006 9.564968E+006 -1.187504E+006 NaN -1.467752E+006 -6.463326E+007 31/12/1982 -1.097563E+007 1.106350E+007 -1.319419E+006 NaN -1.231547E+006 -6.586481E+007 31/12/1983 -6.991291E+006 7.748716E+006 -3.654214E+006 NaN -2.896789E+006 -6.876160E+007 31/12/1984 -7.880176E+006 8.147617E+006 -3.389999E+006 NaN -3.122559E+006 -7.188415E+007 31/12/1985 -9.440902E+006 9.729447E+006 -2.892100E+006 NaN -2.603555E+006 -7.448771E+007 31/12/1986 -9.719843E+006 1.062071E+007 -3.315656E+006 NaN -2.414790E+006 -7.690250E+007 31/12/1987 -1.074933E+007 1.037991E+007 -1.826248E+006 NaN -2.195670E+006 -7.909817E+007 31/12/1988 -1.015597E+007 9.656028E+006 -2.122232E+006 NaN -2.622173E+006 -8.172034E+007 31/12/1989 -9.083475E+006 7.999689E+006 -2.978634E+006 NaN -4.062420E+006 -8.578276E+007 31/12/1990 -6.494912E+006 6.548452E+006 -1.446677E+006 NaN -1.393137E+006 -8.717590E+007 31/12/1991 -8.122609E+006 8.038537E+006 -1.512886E+006 NaN -1.596958E+006 -8.877286E+007 31/12/1992 -6.960552E+006 6.959095E+006 -1.704369E+006 NaN -1.705825E+006 -9.047868E+007 31/12/1993 -7.519650E+006 6.687966E+006 -1.935536E+006 NaN -2.767220E+006 -9.324590E+007 31/12/1994 -8.329362E+006 8.264835E+006 -1.901731E+006 NaN -1.966258E+006 -9.521216E+007 31/12/1995 -8.880733E+006 8.902761E+006 -1.499990E+006 NaN -1.477962E+006 -9.669012E+007 31/12/1996 -8.950308E+006 8.888949E+006 -1.091746E+006 NaN -1.153106E+006 -9.784323E+007 31/12/1997 -1.019394E+007 9.913978E+006 -1.418837E+006 NaN -1.698797E+006 -9.954202E+007 31/12/1998 -1.276407E+007 1.295181E+007 -1.909076E+006 NaN -1.721336E+006 -1.012634E+008 31/12/1999 -1.220337E+007 1.114730E+007 -2.540608E+006 0.000000E+000 -3.596682E+006 -1.048600E+008 31/12/2000 -9.553722E+006 9.573570E+006 -2.601966E+006 0.000000E+000 -2.582118E+006 -1.074422E+008 31/12/2001 -9.707182E+006 9.808376E+006 -1.924330E+006 NaN -1.823136E+006 -1.092653E+008 31/12/2002 -7.275102E+006 7.298278E+006 -1.523119E+006 NaN -1.499943E+006 -1.107652E+008 31/12/2003 -6.505187E+006 6.516845E+006 -1.616298E+006 0.000000E+000 -1.604639E+006 -1.123699E+008 31/12/2004 -6.899092E+006 6.211357E+006 -1.696011E+006 NaN -2.383746E+006 -1.147536E+008 31/12/2005 -6.158341E+006 5.879128E+006 -1.512842E+006 NaN -1.792055E+006 -1.165457E+008 31/12/2006 -5.684846E+006 5.415103E+006 -1.441944E+006 NaN -1.711687E+006 -1.182574E+008 31/12/2007 -5.408938E+006 5.284479E+006 -1.421395E+006 NaN -1.545854E+006 -1.198032E+008 31/12/2008 -6.484167E+006 5.951009E+006 -1.619339E+006 NaN -2.152497E+006 -1.219557E+008