# date (year)	 area (km^2)
    2013.822	       0.000
    2013.841	       0.030
    2013.885	       0.074
    2013.904	       0.137
    2013.910	       0.079
    2013.929	       0.138
    2013.953	      -0.004
    2013.997	      -0.071
    2014.016	      -0.002
    2014.079	       0.109
    2014.085	       0.005
    2014.104	       0.028
    2014.255	      -0.011
    2014.956	       0.053
    2015.044	       0.076
    2015.156	       0.039
    2015.200	       0.055
    2015.638	       0.118
    2015.701	       0.216
    2015.707	       0.123
    2015.882	       0.137
    2015.989	       0.381
    2016.033	       0.258
    2016.776	       0.538
    2016.844	       0.665
    2016.863	       0.550
    2016.883	       0.523
    2016.995	       0.542
    2017.014	       0.459
    2017.195	       0.565
    2017.258	       0.310
    2017.301	       0.317
    2017.696	       0.187
    2017.847	       0.263
    2017.896	       0.272
    2017.959	       0.253
    2018.159	       0.342
    2018.748	       0.093
    2018.767	       0.127
    2018.773	       0.102
    2018.855	       0.140
    2018.942	       0.212
    2018.992	       0.249
    2019.030	       0.352
    2019.142	       0.180
    2019.712	       0.433
    2019.775	       0.402
    2019.781	       0.353
    2019.995	       0.393
    2020.063	       0.446
    2020.150	       0.657
    2020.169	       0.730
    2020.194	       0.749
    2020.787	       0.643
    2020.831	       0.730
    2021.682	       0.347
    2021.751	       0.218
    2021.890	       0.458
    2022.036	       0.416
    2022.734	       0.250
    2022.932	       0.430
    2022.975	       0.166
    2023.000	       0.201
