# date (year)	 area (km^2)
    2013.841	       0.000
    2013.890	      -0.005
    2013.904	       0.008
    2013.929	       0.072
    2013.934	       0.115
    2014.104	       0.006
    2014.110	       0.058
    2014.197	      -0.218
    2014.260	      -0.347
    2014.718	      -0.721
    2014.805	      -0.634
    2014.893	      -0.353
    2014.899	      -0.298
    2014.912	      -0.378
    2014.942	      -0.270
    2014.962	      -0.224
    2014.986	      -0.173
    2015.044	      -0.015
    2015.249	      -1.126
    2015.795	      -1.231
    2015.858	      -0.600
    2015.877	      -0.481
    2015.926	      -0.597
    2015.989	      -0.276
    2016.708	      -0.379
    2016.844	      -0.508
    2016.863	      -0.461
    2016.932	      -0.241
    2016.951	      -0.380
    2016.975	      -0.119
    2017.014	      -0.057
    2017.019	       0.044
    2017.170	       0.275
    2017.759	      -0.077
    2017.784	      -0.057
    2017.803	      -0.051
    2017.833	       0.023
    2017.871	       0.059
    2017.896	      -0.580
    2017.959	      -0.958
    2017.964	      -0.962
    2018.090	      -0.664
    2018.134	      -0.592
    2018.266	      -0.688
    2018.660	      -0.715
    2018.748	      -0.725
    2018.767	      -0.791
    2018.855	      -0.564
    2018.885	      -0.421
    2018.899	      -0.527
    2018.967	      -0.406
    2018.973	      -0.781
    2018.975	      -1.115
    2018.995	      -0.805
    2019.011	      -0.894
    2019.099	      -0.858
    2019.123	      -0.729
    2019.186	      -0.660
    2019.668	      -0.695
    2019.825	      -0.610
    2019.888	      -0.978
    2019.912	      -0.528
    2019.932	      -0.879
    2019.951	      -0.886
    2019.956	      -0.875
    2019.975	      -0.779
    2019.981	      -0.801
    2020.044	      -0.699
    2020.063	      -0.586
    2020.087	      -0.651
    2020.219	      -0.773
    2020.281	      -1.441
    2020.918	      -0.959
    2021.068	      -0.792
    2021.074	      -0.783
    2021.088	      -0.705
    2021.707	      -1.185
    2021.770	      -1.070
    2021.849	      -1.009
    2021.890	      -0.963
    2022.011	      -0.669
    2022.074	      -1.132
    2022.803	      -0.464
    2022.805	      -0.371
    2022.932	      -1.096
    2022.951	      -1.105
    2022.995	      -0.961
    2023.003	      -0.966
    2023.060	      -0.913
    2023.066	      -0.876
    2023.068	      -0.811
    2023.104	      -0.991
    2023.148	      -1.182
    2023.153	      -1.117
    2023.156	      -1.110
    2023.236	      -1.905
    2023.258	      -2.051
    2023.266	      -1.954
