# date (year)	 area (km^2)
    2013.822	       0.000
    2013.910	      -0.012
    2013.934	       0.070
    2013.953	       0.108
    2014.110	      -0.012
    2014.197	      -0.093
    2014.260	      -0.063
    2014.285	      -0.085
    2014.655	       0.036
    2014.679	      -0.139
    2014.742	      -0.024
    2014.786	      -0.078
    2014.811	       0.006
    2014.830	      -0.082
    2014.874	       0.053
    2014.986	       0.072
    2015.005	       0.098
    2015.049	      -0.078
    2015.118	      -0.004
    2015.249	      -0.152
    2015.268	      -0.099
    2015.312	      -0.171
    2015.644	       0.195
    2015.663	       0.260
    2015.688	       0.256
    2015.707	       0.277
    2015.775	       0.206
    2015.838	       0.277
    2015.882	       0.229
    2015.926	       0.378
    2015.995	       0.290
    2016.014	       0.326
    2016.038	       0.304
    2016.057	       0.237
    2016.213	       0.164
    2016.257	       0.117
    2016.276	       0.133
    2016.669	       0.196
    2016.825	       0.186
    2016.844	       0.306
    2016.869	       0.312
    2016.975	       0.266
    2017.000	       0.228
    2017.132	       0.056
    2017.175	      -0.008
    2017.307	       0.024
    2017.633	       0.141
    2017.658	       0.087
    2017.701	       0.143
    2017.721	       0.163
    2017.745	       0.038
    2017.852	       0.008
    2017.921	       0.122
    2018.159	      -0.024
    2018.773	       0.064
    2018.797	       0.238
    2018.816	       0.195
    2018.860	       0.071
    2018.904	       0.016
    2019.060	       0.027
    2019.148	      -0.115
    2019.192	      -0.034
    2019.674	       0.131
    2019.849	       0.059
    2019.868	       0.102
    2019.912	       0.033
    2019.956	       0.151
    2020.000	       0.031
    2020.287	      -0.065
    2020.306	      -0.024
    2020.656	      -0.063
    2020.724	      -0.025
    2020.743	       0.043
    2020.831	       0.033
    2020.918	      -0.031
    2021.030	      -0.049
    2021.074	      -0.056
    2021.093	      -0.038
    2021.225	      -0.062
    2021.249	      -0.250
    2021.268	      -0.166
    2021.707	      -0.188
    2021.882	      -0.049
    2021.926	      -0.041
    2021.970	      -0.034
    2021.973	      -0.170
    2021.992	      -0.062
    2022.145	      -0.119
    2022.167	      -0.106
    2022.233	      -0.121
    2022.279	      -0.056
    2022.301	      -0.041
    2022.627	      -0.106
    2022.652	      -0.005
    2022.671	       0.048
    2022.762	       0.029
    2022.825	       0.046
    2022.827	       0.057
    2022.934	      -0.015
    2022.981	       0.115
    2023.003	       0.122
    2023.156	       0.116
    2023.200	      -0.020
