# date (year)	 area (km^2)
    2013.822	       0.000
    2013.847	       0.002
    2014.022	      -0.038
    2014.129	      -0.207
    2014.285	      -0.110
    2014.636	      -0.052
    2014.786	       0.006
    2014.811	       0.003
    2014.830	      -0.037
    2014.855	       0.045
    2014.923	       0.029
    2014.967	       0.311
    2015.005	       0.084
    2015.049	       0.063
    2015.074	      -0.026
    2015.268	       0.270
    2015.293	       0.156
    2015.775	       0.272
    2015.838	       0.378
    2015.844	       0.404
    2015.863	       0.369
    2015.882	       0.453
    2015.926	       0.413
    2016.014	       0.528
    2016.194	       0.448
    2016.276	       0.518
    2016.626	       0.920
    2016.650	       0.674
    2016.669	       0.571
    2016.757	       0.499
    2016.825	       0.522
    2017.175	      -0.166
    2017.288	      -0.128
    2017.307	      -0.310
    2017.638	      -0.727
    2017.721	      -0.321
    2017.745	      -0.340
    2017.852	      -0.357
    2017.921	      -0.372
    2017.945	      -0.391
    2018.159	      -0.336
    2018.184	      -0.331
    2018.208	      -0.370
    2018.690	      -0.226
    2018.753	      -0.465
    2018.797	      -0.501
    2018.860	      -0.442
    2018.904	      -0.434
    2019.041	      -0.550
    2019.104	      -1.054
    2019.299	      -0.860
    2019.674	      -0.972
    2019.742	      -0.804
    2019.781	      -0.851
    2019.962	      -0.853
    2020.000	      -0.795
    2020.180	      -0.969
    2020.262	      -1.211
    2020.699	      -1.055
    2020.724	      -0.921
    2020.743	      -0.909
    2020.749	      -0.879
    2020.768	      -0.881
    2020.831	      -0.959
    2020.855	      -0.943
    2020.923	      -0.948
    2021.093	      -0.922
    2021.142	      -1.012
    2021.162	      -0.922
    2021.625	      -1.061
    2021.896	      -1.053
    2021.926	      -1.182
    2021.929	      -1.130
    2022.019	      -1.115
    2022.170	      -1.152
    2022.211	      -1.346
    2023.000	      -1.186
    2023.088	      -1.377
    2023.093	      -1.313
    2023.137	      -1.276
    2023.200	      -1.376
    2023.203	      -1.339
