# date (year)	 area (km^2)
    2013.822	       0.000
    2013.910	      -0.047
    2013.934	      -0.065
    2013.953	      -0.152
    2014.197	      -0.274
    2014.260	      -0.116
    2014.279	      -0.077
    2014.285	      -0.110
    2014.723	      -0.039
    2014.742	       0.065
    2014.830	      -0.112
    2014.855	      -0.187
    2014.874	      -0.021
    2014.918	      -0.136
    2014.986	      -0.261
    2015.005	      -0.051
    2015.118	      -0.245
    2015.249	      -0.029
    2015.268	      -0.014
    2015.312	       0.000
    2015.644	       0.125
    2015.663	       0.184
    2015.688	       0.108
    2015.707	       0.208
    2015.775	      -0.037
    2015.838	       0.029
    2015.863	       0.049
    2015.926	      -0.076
    2015.951	      -0.010
    2015.995	      -0.124
    2016.038	      -0.027
    2016.213	      -0.126
    2016.257	      -0.037
    2016.301	       0.095
    2016.669	       0.089
    2016.869	       0.091
    2016.888	       0.128
    2016.975	       0.102
    2017.000	       0.063
    2017.044	       0.198
    2017.132	       0.083
    2017.175	       0.041
    2017.258	       0.037
    2017.307	       0.132
    2017.633	       0.132
    2017.658	       0.086
    2017.701	       0.088
    2017.721	       0.311
    2017.745	       0.190
    2017.852	       0.173
    2017.921	       0.179
    2018.052	       0.216
    2018.178	       0.191
    2018.753	       0.066
    2018.773	       0.146
    2018.797	       0.061
    2018.816	       0.049
    2018.860	       0.098
    2018.904	      -0.018
    2019.060	       0.026
    2019.142	       0.121
    2019.148	       0.128
    2019.649	       0.044
    2019.674	      -0.017
    2019.693	       0.241
    2019.781	       0.237
    2019.849	       0.076
    2019.868	       0.090
    2019.937	       0.080
    2019.956	       0.097
    2020.107	       0.141
    2020.112	      -0.071
    2020.150	       0.164
    2020.156	      -0.029
    2020.281	       0.310
    2020.287	       0.167
    2020.306	       0.213
    2020.724	       0.159
    2020.743	       0.122
    2020.787	       0.181
    2020.831	       0.102
    2020.918	       0.062
    2021.030	      -0.015
    2021.074	      -0.322
    2021.093	      -0.126
    2021.249	      -0.160
    2021.644	      -0.105
    2021.970	       0.102
    2022.167	       0.013
    2022.301	       0.200
    2022.671	       0.269
    2022.827	       0.058
    2022.934	       0.006
    2023.000	       0.001
    2023.003	      -0.005
    2023.156	      -0.067
    2023.200	      -0.005
    2023.216	       0.048
