# date (year)	 area (km^2)
    2013.841	       0.000
    2013.885	      -0.045
    2013.904	       0.020
    2013.910	       0.002
    2013.929	       0.054
    2013.953	       0.069
    2013.997	       0.084
    2014.104	       0.081
    2014.255	      -0.121
    2014.718	       0.297
    2014.742	       0.277
    2014.893	       0.176
    2014.912	       0.046
    2014.918	      -0.070
    2015.044	       0.110
    2015.088	      -0.091
    2015.156	      -0.119
    2015.307	      -0.108
    2015.638	      -0.116
    2015.701	      -0.041
    2015.707	      -0.077
    2015.877	      -0.089
    2015.882	      -0.117
    2015.989	      -0.179
    2016.033	      -0.156
    2016.251	      -0.246
    2016.295	      -0.229
    2016.844	      -0.106
    2016.863	      -0.003
    2016.883	      -0.148
    2016.932	      -0.148
    2016.995	      -0.110
    2017.014	      -0.045
    2017.101	      -0.243
    2017.195	      -0.485
    2017.258	      -0.356
    2018.159	      -0.451
    2018.197	      -0.428
    2018.748	      -0.295
    2018.767	      -0.507
    2018.773	      -0.230
    2018.855	      -0.322
    2018.923	      -0.270
    2018.942	      -0.234
    2018.986	      -0.519
    2019.005	       0.071
    2019.142	      -0.409
    2019.162	      -0.393
    2019.249	      -0.346
    2019.255	      -0.375
    2019.293	      -0.417
    2019.668	      -0.460
    2019.844	      -0.556
    2019.932	      -0.454
    2019.956	      -0.440
    2020.000	      -0.461
    2020.044	      -0.403
    2020.063	      -0.491
    2020.126	      -0.521
    2020.150	      -0.524
    2020.169	      -0.447
    2020.306	      -0.661
    2020.675	      -0.540
    2020.781	      -0.796
    2020.787	      -0.836
    2020.831	      -0.801
    2020.918	      -0.766
    2020.962	      -0.753
    2021.068	      -0.800
    2021.088	      -0.786
    2021.181	      -1.153
    2021.219	      -1.243
    2021.682	      -1.234
    2021.701	      -1.301
    2021.707	      -1.298
    2021.751	      -1.380
    2021.789	      -1.256
    2021.890	      -1.390
    2022.099	      -1.539
    2022.164	      -1.567
    2022.208	      -1.523
    2022.255	      -1.648
    2022.734	      -1.606
    2022.753	      -1.497
    2022.778	      -1.675
    2022.825	      -1.624
    2022.932	      -1.603
    2022.934	      -1.638
    2023.000	      -1.712
    2023.148	      -1.968
    2023.238	      -1.892
