# date (year)	 area (km^2)
    2013.496	       0.000
    2013.584	       0.508
    2013.890	       0.405
    2013.934	       0.368
    2013.959	       0.399
    2014.090	       0.067
    2014.197	      -0.077
    2014.285	      -0.063
    2014.660	       0.421
    2014.748	       0.479
    2014.792	       0.390
    2014.855	       0.112
    2014.899	       0.118
    2014.923	       0.342
    2014.986	       0.189
    2015.230	      -0.060
    2015.644	       0.476
    2015.668	       0.447
    2015.688	       0.596
    2015.712	       0.562
    2015.800	       0.598
    2016.019	       0.421
    2016.213	       0.012
    2016.257	      -0.128
    2016.301	      -0.089
    2016.825	       0.586
    2016.850	       0.473
    2016.869	       0.417
    2017.175	      -0.058
    2017.288	      -0.218
    2017.307	      -0.294
    2017.638	       0.148
    2017.745	       0.226
    2017.770	       0.254
    2017.833	       0.111
    2017.921	      -0.275
    2017.945	       0.231
    2017.964	       0.003
    2018.033	       0.082
    2018.096	      -0.024
    2018.252	      -0.019
    2018.778	       0.177
    2018.797	       0.266
    2019.041	       0.040
    2019.060	      -0.088
    2019.085	      -0.176
    2019.304	      -0.171
    2019.655	       0.159
    2019.674	       0.285
    2019.786	       0.442
    2019.849	       0.323
    2020.093	       0.262
    2020.156	      -0.206
    2020.180	      -0.142
    2020.311	      -0.269
    2020.331	      -0.133
    2020.661	       0.242
    2020.724	       0.146
    2020.923	      -0.032
    2021.030	      -0.139
    2021.249	      -0.735
    2021.668	      -0.023
    2021.888	       0.049
    2021.929	       0.037
    2021.932	      -0.131
    2021.997	      -0.285
    2022.019	      -0.361
    2022.041	      -0.236
    2022.238	      -0.419
    2022.633	      -0.104
    2022.652	      -0.085
    2022.674	      -0.090
    2022.784	      -0.123
    2022.915	      -0.112
    2022.940	      -0.309
    2023.137	      -0.473
