** date ** baggeren ** storten ** zandwinning ** wrak ** totaal ** cumulatief == 01/01/1955 NaN NaN NaN NaN NaN 0.000000E+000 31/12/1955 -7.301864E+005 1.367868E+006 NaN NaN 6.376818E+005 6.376818E+005 31/12/1956 -9.477409E+005 7.105500E+005 NaN NaN -2.371909E+005 4.004909E+005 31/12/1957 -1.107132E+006 4.630727E+005 NaN NaN -6.440591E+005 -2.435682E+005 31/12/1958 -7.849273E+005 7.943864E+005 NaN NaN 9.459091E+003 -2.341091E+005 31/12/1959 -1.062895E+006 6.444545E+005 NaN NaN -4.184409E+005 -6.525500E+005 31/12/1960 -7.204591E+005 8.315009E+005 NaN NaN 1.110418E+005 -5.415082E+005 31/12/1961 -1.150897E+006 2.207141E+006 NaN NaN 1.056244E+006 5.147355E+005 31/12/1962 -1.959261E+006 7.600418E+005 NaN NaN -1.199219E+006 -6.844836E+005 31/12/1963 -1.475861E+006 NaN NaN NaN -1.475861E+006 -2.160345E+006 31/12/1964 -2.143474E+006 4.372645E+005 NaN NaN -1.706209E+006 -3.866554E+006 31/12/1965 -1.135624E+006 1.566760E+006 -5.332164E+005 NaN -1.020800E+005 -3.968634E+006 31/12/1966 -4.605164E+005 1.534888E+006 NaN NaN 1.074372E+006 -2.894262E+006 31/12/1967 -8.580618E+005 2.504182E+006 NaN NaN 1.646120E+006 -1.248142E+006 31/12/1968 -8.185427E+005 1.813441E+006 NaN NaN 9.948982E+005 -2.532436E+005 31/12/1969 -9.261182E+004 1.291938E+006 NaN NaN 1.199326E+006 9.460827E+005 31/12/1970 -1.696477E+006 1.118247E+006 NaN NaN -5.782300E+005 3.678527E+005 31/12/1971 -2.694421E+006 3.831600E+005 NaN NaN -2.311261E+006 -1.943408E+006 31/12/1972 -1.732034E+006 NaN NaN NaN -1.732034E+006 -3.675442E+006 31/12/1973 -3.675453E+006 2.851818E+004 -5.246582E+005 NaN -4.171593E+006 -7.847035E+006 31/12/1974 -3.545489E+006 1.177819E+006 -1.820009E+005 NaN -2.549671E+006 -1.039671E+007 31/12/1975 -3.704129E+006 1.827905E+006 -4.265845E+005 NaN -2.302809E+006 -1.269951E+007 31/12/1976 -4.744315E+006 1.610321E+006 -5.890000E+003 NaN -3.139884E+006 -1.583940E+007 31/12/1977 -2.737697E+006 2.733874E+006 -1.806636E+004 NaN -2.189000E+004 -1.586129E+007 31/12/1978 -3.550092E+006 3.727100E+006 -7.605218E+005 NaN -5.835136E+005 -1.644480E+007 31/12/1979 -4.658479E+006 3.857445E+006 -6.020400E+005 NaN -1.403074E+006 -1.784788E+007 31/12/1980 -4.663788E+006 2.917295E+006 -8.573609E+005 NaN -2.603853E+006 -2.045173E+007 31/12/1981 -4.603065E+006 4.079966E+006 -1.758682E+005 NaN -6.989670E+005 -2.115070E+007 31/12/1982 -3.581667E+006 5.662133E+006 -2.532891E+005 NaN 1.827177E+006 -1.932352E+007 31/12/1983 -3.441826E+006 3.031766E+006 -1.082244E+006 NaN -1.492303E+006 -2.081582E+007 31/12/1984 -3.303402E+006 3.783593E+006 -2.710436E+005 NaN 2.091475E+005 -2.060668E+007 31/12/1985 -3.938531E+006 3.743733E+006 -3.688836E+005 NaN -5.636822E+005 -2.117036E+007 31/12/1986 -3.018770E+006 5.826867E+006 -4.032527E+005 NaN 2.404845E+006 -1.876551E+007 31/12/1987 -5.084123E+006 5.061025E+006 -3.842400E+005 NaN -4.073373E+005 -1.917285E+007 31/12/1988 -5.052664E+006 3.833093E+006 -3.751682E+005 NaN -1.594739E+006 -2.076759E+007 31/12/1989 -4.623352E+006 3.731144E+006 -2.839573E+005 NaN -1.176165E+006 -2.194375E+007 31/12/1990 -2.810010E+006 2.863437E+006 -1.904218E+005 NaN -1.369949E+005 -2.208075E+007 31/12/1991 -4.244364E+006 3.612173E+006 -2.662545E+005 NaN -8.984453E+005 -2.297919E+007 31/12/1992 -3.881826E+006 2.669520E+006 -2.544528E+005 NaN -1.466759E+006 -2.444595E+007 31/12/1993 -4.259686E+006 2.388565E+006 -2.980077E+005 NaN -2.169129E+006 -2.661508E+007 31/12/1994 -3.730212E+006 3.689896E+006 -5.696029E+005 NaN -6.099187E+005 -2.722500E+007 31/12/1995 -4.096363E+006 3.045690E+006 -5.309889E+005 NaN -1.581662E+006 -2.880666E+007 31/12/1996 -4.395161E+006 2.565258E+006 -4.741831E+005 NaN -2.304086E+006 -3.111075E+007 31/12/1997 -5.137805E+006 1.204970E+006 -6.803793E+005 NaN -4.613214E+006 -3.572396E+007 31/12/1998 -5.722700E+006 2.436636E+005 -8.510873E+005 NaN -6.330124E+006 -4.205409E+007 31/12/1999 -5.085297E+006 2.761382E+005 -8.966973E+005 NaN -5.705856E+006 -4.775994E+007 31/12/2000 -4.957771E+006 3.575936E+005 -7.526962E+005 NaN -5.352873E+006 -5.311282E+007 31/12/2001 -4.384697E+006 2.727273E+005 -6.198266E+005 NaN -4.731797E+006 -5.784461E+007 31/12/2002 -2.913558E+006 NaN -6.458867E+005 NaN -3.559445E+006 -6.140406E+007 31/12/2003 -3.189167E+006 NaN -7.455935E+005 NaN -3.934760E+006 -6.533882E+007 31/12/2004 -3.358212E+006 NaN -7.824419E+005 NaN -4.140654E+006 -6.947947E+007 31/12/2005 -2.377644E+006 NaN -6.525536E+005 NaN -3.030197E+006 -7.250967E+007 31/12/2006 -2.139916E+006 2.622191E+005 -5.693536E+005 NaN -2.447051E+006 -7.495672E+007 31/12/2007 -2.382199E+006 NaN -6.301936E+005 NaN -3.012393E+006 -7.796911E+007 31/12/2008 -3.302416E+006 NaN -6.812645E+005 NaN -3.983681E+006 -8.195279E+007