# date (year)	 area (km^2)
    2013.822	       0.000
    2013.885	       0.082
    2013.910	       0.114
    2013.929	       0.075
    2013.934	       0.078
    2014.016	       0.129
    2014.110	       0.150
    2014.260	       0.237
    2014.279	       0.181
    2014.655	      -0.002
    2014.718	      -0.081
    2014.742	      -0.057
    2014.830	      -0.028
    2014.893	      -0.039
    2014.986	      -0.021
    2015.005	       0.001
    2015.118	      -0.080
    2015.156	      -0.122
    2015.249	      -0.115
    2015.268	      -0.069
    2015.638	       0.019
    2015.644	      -0.151
    2015.775	      -0.030
    2015.838	      -0.028
    2015.858	      -0.080
    2015.926	      -0.021
    2015.989	      -0.136
    2016.213	      -0.112
    2016.251	      -0.207
    2016.257	      -0.228
    2016.295	      -0.253
    2016.301	      -0.175
    2016.669	      -0.184
    2016.932	      -0.418
    2016.995	      -0.417
    2017.000	      -0.484
    2017.132	      -0.417
    2017.258	      -0.394
    2017.301	      -0.533
    2017.307	      -0.435
    2017.633	      -0.426
    2017.658	      -0.446
    2017.696	      -0.580
    2017.701	      -0.541
    2017.721	      -0.505
    2017.745	      -0.561
    2017.896	      -0.561
    2017.921	      -0.586
    2018.071	      -0.524
    2018.178	      -0.437
    2018.753	      -0.645
    2018.773	      -0.690
    2018.860	      -0.677
    2018.967	      -0.764
    2019.104	      -0.782
    2019.142	      -0.765
    2019.148	      -0.751
    2019.192	      -0.728
    2019.299	      -0.761
    2019.625	      -0.831
    2019.693	      -0.963
    2019.762	      -0.904
    2019.781	      -0.971
    2019.888	      -1.021
    2019.937	      -1.020
    2019.956	      -0.973
    2020.107	      -1.021
    2020.150	      -1.061
    2020.156	      -0.973
    2020.281	      -1.045
    2020.287	      -0.996
    2020.306	      -1.055
    2020.719	      -1.193
    2020.743	      -1.193
    2020.787	      -1.232
    2020.806	      -1.276
    2020.918	      -1.155
    2021.030	      -1.155
    2021.093	      -1.181
    2021.638	      -1.281
    2021.707	      -1.399
    2021.890	      -1.529
    2021.967	      -1.505
    2022.011	      -1.563
    2022.036	      -1.388
    2022.145	      -1.529
    2022.164	      -1.588
    2022.208	      -1.615
    2022.258	      -1.566
    2022.301	      -1.443
    2022.827	      -1.584
    2022.932	      -1.650
    2022.975	      -1.672
    2023.200	      -1.858
    2023.216	      -1.772
    2023.238	      -1.876
    2023.282	      -1.753
