# date (year)	 area (km^2)
    2013.822	       0.000
    2013.885	       0.318
    2013.904	       0.708
    2013.910	       0.767
    2013.929	       0.739
    2013.953	       1.221
    2013.997	       1.279
    2014.079	       1.813
    2014.085	       2.066
    2014.104	       2.622
    2014.216	       0.607
    2014.255	       0.693
    2014.655	       0.282
    2014.674	       0.715
    2014.718	       0.099
    2014.737	       0.178
    2014.742	       0.205
    2014.781	       0.776
    2014.893	       0.490
    2014.912	       0.592
    2014.918	       0.837
    2015.044	       1.033
    2015.088	       1.094
    2015.156	       0.651
    2015.219	       0.542
    2015.307	      -0.074
    2015.638	       0.459
    2015.682	       0.185
    2015.701	      -0.086
    2015.707	      -0.065
    2015.877	       0.673
    2015.882	       0.780
    2015.989	       1.651
    2016.014	       1.273
    2016.033	       0.752
    2016.057	       0.426
    2016.183	       0.298
    2016.295	       0.082
    2016.645	       0.729
    2016.776	       0.996
    2016.844	       0.633
    2016.863	       0.395
    2016.883	       0.586
    2016.888	       0.607
    2016.932	       0.661
    2016.995	       1.031
    2017.014	       0.765
    2017.038	       0.836
    2017.101	       0.772
    2017.189	       0.480
    2017.258	       0.139
    2017.277	      -0.025
    2017.301	       0.224
    2017.803	       0.094
    2017.890	      -0.089
    2017.959	       0.107
    2018.090	       0.315
    2018.153	       1.095
    2018.159	       0.673
    2018.197	       0.890
    2018.203	       0.657
    2018.636	       0.428
    2018.660	       0.135
    2018.729	       0.374
    2018.748	       0.402
    2018.773	       0.702
    2018.855	       0.287
    2018.923	       0.825
    2018.967	       0.475
    2018.986	       1.611
    2019.142	       0.011
    2019.162	      -0.251
    2019.186	       0.504
    2019.230	       0.113
    2019.249	      -0.084
    2019.255	      -0.231
    2019.293	      -0.281
    2019.644	       0.183
    2019.668	       0.425
    2019.844	       0.162
    2019.907	       1.172
    2019.956	       0.639
    2019.975	       0.612
    2020.000	       0.987
    2020.063	      -0.002
    2020.126	       0.594
    2020.150	       0.515
    2020.169	       0.350
    2020.257	       0.515
    2020.675	      -0.513
    2020.743	      -0.729
    2020.781	      -0.512
    2020.787	      -0.295
    2020.831	      -0.354
    2020.869	      -0.751
    2020.918	      -0.100
    2020.962	       0.155
    2021.068	      -0.297
    2021.181	      -0.221
    2021.219	      -0.067
    2021.682	       0.088
    2021.701	       0.186
    2021.707	       0.286
    2021.751	       0.045
    2021.789	      -0.059
    2021.814	       0.008
    2021.877	       0.388
    2021.890	       0.451
    2022.036	       1.015
    2022.099	       0.420
    2022.164	      -0.097
    2022.208	      -0.023
    2022.233	      -0.012
    2022.255	       0.082
    2022.734	      -0.009
    2022.778	       0.428
    2022.822	      -0.411
    2022.825	      -0.448
    2022.929	      -0.029
    2022.932	      -0.014
    2022.934	      -0.018
    2022.975	       0.184
    2022.995	       0.124
    2023.041	      -0.109
    2023.126	      -0.056
    2023.170	      -0.177
    2023.214	      -0.406
    2023.236	      -0.262
    2023.238	       0.018
    2023.301	      -0.421
