# date (year)	 area (km^2)
    2013.822	       0.000
    2013.885	       0.239
    2013.904	       0.156
    2013.910	      -0.058
    2013.929	       0.138
    2013.948	       0.070
    2013.953	      -0.098
    2013.997	       0.053
    2014.079	       0.049
    2014.085	       0.138
    2014.104	       0.031
    2014.216	      -0.154
    2014.255	      -0.022
    2014.649	       0.162
    2014.655	       0.087
    2014.674	       0.042
    2014.718	       0.063
    2014.737	       0.331
    2014.742	       0.116
    2014.893	       0.130
    2015.044	       0.317
    2015.088	       0.166
    2015.156	      -0.155
    2015.307	      -0.061
    2015.701	       0.051
    2015.707	      -0.077
    2015.882	      -0.046
    2015.964	       0.068
    2015.989	       0.014
    2016.033	      -0.017
    2016.057	      -0.287
    2016.145	      -0.626
    2016.295	      -0.169
    2016.645	       0.232
    2016.751	      -0.094
    2016.776	       0.024
    2016.863	       0.291
    2016.883	       0.158
    2016.932	       0.113
    2016.995	       0.322
    2017.014	       0.240
    2017.038	       0.307
    2017.189	      -0.213
    2017.258	      -0.406
    2017.277	      -0.291
    2017.759	      -0.153
    2017.784	      -0.058
    2017.847	      -0.227
    2017.959	       0.057
    2017.984	      -0.068
    2018.003	      -0.619
    2018.090	      -0.085
    2018.134	      -0.678
    2018.159	      -0.419
    2018.197	      -0.349
    2018.203	      -0.495
    2018.636	       0.126
    2018.660	       0.203
    2018.729	      -0.123
    2018.748	       0.014
    2018.773	       0.001
    2018.855	       0.174
    2018.967	       0.047
    2018.986	       0.100
    2019.005	      -0.437
    2019.142	       0.079
    2019.162	      -0.055
    2019.186	      -0.230
    2019.205	      -0.003
    2019.230	      -0.172
    2019.249	      -0.124
    2019.255	      -0.325
    2019.293	      -0.080
    2019.644	       0.044
    2019.668	      -0.167
    2019.781	      -0.324
    2019.844	      -0.077
    2019.907	      -0.116
    2019.956	      -0.280
    2019.975	      -0.105
    2020.000	      -0.415
    2020.044	      -0.501
    2020.126	      -0.284
    2020.150	      -0.409
    2020.169	      -0.488
    2020.219	      -0.688
    2020.281	      -0.669
    2020.694	      -0.158
    2020.743	      -0.124
    2020.781	      -0.255
    2020.831	      -0.332
    2020.918	      -0.334
    2020.962	      -0.427
    2021.025	      -0.209
    2021.068	      -0.270
    2021.219	      -0.481
    2021.701	      -0.153
    2021.707	      -0.286
    2021.751	      -0.417
    2021.789	      -0.214
    2021.890	      -0.378
    2022.008	      -0.092
    2022.036	      -0.456
    2022.099	      -0.316
    2022.164	      -0.465
    2022.186	      -0.820
    2022.208	      -0.611
    2022.233	      -0.712
    2022.252	      -0.685
    2022.255	      -1.139
    2022.710	      -0.611
    2022.734	      -0.603
    2022.778	      -0.657
    2022.803	      -0.730
    2022.822	      -0.605
    2022.825	      -0.671
    2022.929	      -0.466
    2022.932	      -0.566
    2022.934	      -0.658
    2022.975	      -0.626
    2022.995	      -0.680
    2023.060	      -0.764
    2023.126	      -0.757
    2023.170	      -0.770
    2023.236	      -0.928
    2023.238	      -0.970
