# date (year)	 area (km^2)
    2013.822	       0.000
    2013.885	       0.344
    2013.904	       0.718
    2013.910	       0.780
    2013.929	       0.759
    2013.953	       1.122
    2013.997	       1.302
    2014.079	       1.820
    2014.085	       2.039
    2014.104	       2.340
    2014.216	       0.644
    2014.255	       0.741
    2014.655	       0.302
    2014.674	       0.735
    2014.718	       0.135
    2014.737	       0.215
    2014.742	       0.242
    2014.781	       0.784
    2014.893	       0.517
    2014.912	       0.626
    2014.918	       0.791
    2015.044	       1.060
    2015.088	       1.127
    2015.156	       0.690
    2015.219	       0.577
    2015.307	      -0.231
    2015.638	       0.490
    2015.682	       0.220
    2015.701	      -0.048
    2015.707	      -0.030
    2015.877	       0.702
    2015.882	       0.802
    2015.989	       1.614
    2016.014	       1.244
    2016.033	       0.791
    2016.057	       0.457
    2016.145	       0.672
    2016.183	       0.339
    2016.295	       0.137
    2016.645	       0.704
    2016.776	       1.007
    2016.844	       0.659
    2016.863	       0.431
    2016.883	       0.611
    2016.888	       0.639
    2016.932	       0.693
    2016.995	       1.024
    2017.014	       0.807
    2017.038	       0.881
    2017.101	       0.806
    2017.189	       0.526
    2017.258	       0.180
    2017.277	      -0.067
    2017.301	       0.244
    2017.803	       0.116
    2017.890	      -0.060
    2017.959	       0.147
    2018.090	       0.358
    2018.153	       1.098
    2018.159	       0.702
    2018.197	       0.935
    2018.203	       0.701
    2018.636	       0.466
    2018.660	       0.177
    2018.729	       0.409
    2018.748	       0.432
    2018.773	       0.715
    2018.855	       0.325
    2018.923	       0.827
    2018.967	       0.492
    2018.986	       1.601
    2019.142	       0.057
    2019.162	      -0.208
    2019.186	       0.509
    2019.230	       0.048
    2019.249	      -0.047
    2019.255	      -0.180
    2019.293	      -0.250
    2019.644	       0.226
    2019.668	       0.423
    2019.844	       0.197
    2019.956	       0.675
    2019.975	       0.641
    2020.000	       1.006
    2020.126	       0.633
    2020.150	       0.559
    2020.169	       0.394
    2020.257	       0.441
    2020.675	      -0.473
    2020.743	      -0.701
    2020.781	      -0.473
    2020.787	      -0.368
    2020.831	      -0.316
    2020.918	      -0.062
    2020.962	       0.191
    2021.068	      -0.249
    2021.181	      -0.186
    2021.219	      -0.020
    2021.682	       0.108
    2021.701	       0.222
    2021.707	       0.323
    2021.751	      -0.105
    2021.789	      -0.020
    2021.814	       0.034
    2021.877	       0.390
    2021.890	       0.483
    2022.036	       0.979
    2022.099	       0.462
    2022.164	      -0.053
    2022.208	       0.028
    2022.233	       0.029
    2022.255	       0.136
    2022.734	       0.035
    2022.778	       0.434
    2022.822	      -0.374
    2022.825	      -0.402
    2022.929	       0.018
    2022.932	       0.030
    2022.934	       0.025
    2022.975	       0.224
    2022.995	       0.159
    2023.041	      -0.110
    2023.126	      -0.101
    2023.170	      -0.273
    2023.214	      -0.418
    2023.236	      -0.210
    2023.238	      -0.014
    2023.301	      -0.456
