# date (year)	 area (km^2)
    2013.822	       0.000
    2013.847	       0.025
    2013.885	      -0.002
    2013.929	      -0.165
    2013.973	      -0.033
    2014.022	      -0.137
    2014.085	      -0.037
    2014.636	      -0.076
    2014.674	       0.023
    2014.742	       0.001
    2014.830	      -0.012
    2014.855	       0.033
    2014.986	       0.027
    2015.005	       0.185
    2015.200	      -0.081
    2015.268	      -0.236
    2015.638	      -0.063
    2015.644	      -0.128
    2015.707	      -0.083
    2015.775	      -0.147
    2015.838	      -0.153
    2015.858	      -0.236
    2015.863	      -0.217
    2015.882	      -0.134
    2015.926	      -0.069
    2016.014	      -0.080
    2016.082	      -0.253
    2016.213	      -0.171
    2016.257	      -0.111
    2016.276	      -0.163
    2016.295	      -0.217
    2016.301	      -0.139
    2016.645	      -0.170
    2016.801	       0.006
    2016.825	      -0.012
    2016.844	       0.105
    2016.869	      -0.113
    2016.995	      -0.007
    2017.082	       0.050
    2017.088	       0.017
    2017.107	       0.304
    2017.175	      -0.042
    2017.301	       0.273
    2017.658	      -0.126
    2017.696	      -0.019
    2017.701	      -0.075
    2017.721	      -0.089
    2017.745	      -0.120
    2017.871	       0.185
    2017.877	      -0.147
    2017.921	      -0.117
    2018.134	       0.313
    2018.159	      -0.083
    2018.178	      -0.120
    2018.184	       0.001
    2018.222	       0.054
    2018.660	       0.392
    2018.666	      -0.100
    2018.704	       0.625
    2018.710	       0.350
    2018.729	       0.229
    2018.748	       0.266
    2018.753	       0.197
    2018.816	       0.788
    2018.836	       0.795
    2018.860	       1.014
    2018.904	       0.820
    2018.923	       0.629
    2018.967	       1.000
    2019.142	       0.872
    2019.148	       1.001
    2019.192	       0.919
    2019.693	       1.125
    2019.756	       0.729
    2019.762	       0.795
    2019.781	       0.813
    2019.888	       0.682
    2019.912	       0.704
    2020.000	       0.682
    2020.107	       0.760
    2020.150	       0.973
    2020.194	       1.253
    2020.287	       0.740
    2020.306	       1.163
    2020.719	       0.817
    2020.724	       1.063
    2020.743	       1.113
    2020.768	       1.087
    2020.787	       1.164
    2020.831	       1.110
    2020.855	       1.075
    2020.937	       1.101
    2021.093	       0.850
    2021.225	       0.930
    2021.249	       0.901
    2021.638	       0.889
    2021.682	       0.828
    2021.688	       1.013
    2021.707	       0.954
    2021.751	       0.716
    2021.770	       0.612
    2021.775	       0.714
    2021.795	       0.914
    2021.858	       0.444
    2021.901	       0.512
    2021.926	       0.424
    2021.948	       0.386
    2021.967	       0.309
    2022.186	      -0.855
    2022.230	      -1.233
    2022.652	      -1.211
    2022.671	      -1.451
    2022.762	      -1.491
    2022.827	      -1.567
    2022.849	      -1.187
    2022.890	      -1.522
    2022.893	      -1.438
    2022.912	      -1.484
    2022.915	      -1.269
    2022.934	      -1.724
    2022.953	      -1.775
    2022.975	      -1.708
    2022.981	      -1.739
    2023.000	      -1.890
    2023.044	      -2.033
    2023.175	      -2.309
    2023.200	      -2.252
    2023.216	      -2.420
    2023.238	      -2.355
    2023.307	      -2.539
