# date (year)	 area (km^2)
    2013.822	       0.000
    2013.841	       0.151
    2013.904	       0.062
    2013.929	      -0.435
    2013.953	      -0.418
    2013.978	      -0.235
    2013.997	      -0.341
    2014.079	      -0.092
    2014.104	      -0.125
    2014.192	      -0.117
    2014.211	       0.022
    2014.216	      -0.497
    2014.255	      -0.435
    2014.260	      -0.509
    2014.655	      -0.522
    2014.718	      -0.388
    2014.737	      -0.310
    2014.781	      -0.208
    2014.874	      -0.327
    2014.893	      -0.053
    2014.899	      -0.112
    2014.912	      -0.054
    2014.962	      -0.053
    2015.025	       0.104
    2015.044	       0.158
    2015.093	       0.202
    2015.156	      -0.114
    2015.181	      -0.139
    2015.244	      -0.044
    2015.682	       0.381
    2015.688	       0.266
    2015.707	       0.461
    2015.789	       0.491
    2015.858	       0.695
    2015.863	       0.651
    2015.877	       0.574
    2015.901	       0.444
    2015.926	       0.554
    2015.989	       0.476
    2016.033	       0.387
    2016.120	       0.484
    2016.145	       0.388
    2016.708	       0.341
    2016.781	       0.359
    2016.844	       0.286
    2016.863	       0.648
    2016.883	       0.519
    2016.932	       0.535
    2016.951	       0.594
    2016.970	       0.621
    2016.975	       0.599
    2017.014	       0.718
    2017.019	       0.618
    2017.038	       0.543
    2017.145	       0.760
    2017.170	       0.808
    2017.277	       0.642
    2017.701	      -0.033
    2017.745	       0.048
    2017.759	       0.227
    2017.784	       0.302
    2017.803	       0.264
    2017.871	       0.209
    2017.896	       0.276
    2017.934	       0.281
    2017.959	       0.251
    2017.964	       0.179
    2018.003	       0.193
    2018.008	       0.213
    2018.047	       0.272
    2018.071	       0.126
    2018.090	       0.178
    2018.134	       0.187
    2018.178	      -0.390
    2018.660	       0.178
    2018.704	       0.264
    2018.748	       0.353
    2018.753	       0.204
    2018.767	       0.245
    2018.855	       0.520
    2018.860	       0.340
    2018.899	       0.576
    2018.948	       0.171
    2018.967	       0.726
    2019.011	       0.272
    2019.030	       0.363
    2019.055	       0.335
    2019.099	       0.250
    2019.230	       0.349
    2019.274	      -0.132
    2019.668	       0.458
    2019.775	       0.599
    2019.849	       0.652
    2019.907	       0.802
    2019.912	       0.477
    2019.951	       0.879
    2019.956	       0.860
    2019.975	       0.672
    2019.981	       0.546
    2020.044	       0.667
    2020.087	       0.693
    2020.126	       0.559
    2020.150	       0.424
    2020.169	       0.268
    2020.219	      -0.481
    2020.257	      -0.457
    2020.281	      -0.435
    2020.738	      -0.318
    2020.781	      -0.294
    2020.869	      -0.176
    2020.918	      -0.173
    2021.025	       0.116
    2021.068	       0.094
    2021.074	      -0.042
    2021.088	       0.060
    2021.137	      -0.096
    2021.219	      -0.167
    2021.688	      -0.315
    2021.707	      -0.275
    2021.732	      -0.247
    2021.770	       0.015
    2021.775	      -0.080
    2021.877	       0.158
    2021.890	       0.132
    2021.907	       0.115
    2021.923	       0.111
    2021.995	       0.198
    2022.011	       0.218
    2022.016	       0.187
    2022.036	       0.268
    2022.038	       0.235
    2022.074	       0.319
    2022.164	       0.312
    2022.167	       0.258
    2022.734	       0.657
    2022.737	       0.490
    2022.778	      -0.150
    2022.800	      -0.156
    2022.803	      -0.052
    2022.805	      -0.061
    2022.819	      -0.038
    2022.822	      -0.110
    2022.871	      -0.100
    2022.888	       0.014
    2022.893	      -0.001
    2022.932	       0.104
    2022.937	       0.048
    2022.951	       0.124
    2022.956	       0.088
    2022.978	       0.038
    2022.995	       0.125
    2023.003	       0.023
    2023.060	       0.077
    2023.066	       0.050
    2023.148	      -0.004
    2023.153	      -0.043
    2023.156	      -0.111
    2023.173	      -0.101
    2023.197	      -0.089
    2023.236	      -0.008
    2023.258	      -0.068
