# date (year)	 area (km^2)
    2013.822	       0.000
    2013.885	      -0.300
    2013.904	      -0.212
    2013.910	      -0.182
    2013.929	      -0.127
    2013.953	      -0.028
    2013.997	      -0.143
    2014.016	      -0.069
    2014.079	       0.107
    2014.085	       0.108
    2014.104	       0.132
    2014.255	      -0.167
    2014.649	      -0.249
    2014.655	      -0.178
    2014.674	      -0.198
    2014.718	      -0.346
    2014.742	      -0.231
    2014.893	      -0.246
    2014.912	      -0.226
    2014.956	      -0.081
    2015.025	      -0.067
    2015.044	       0.118
    2015.156	      -0.148
    2015.175	      -0.187
    2015.638	      -0.395
    2015.701	       0.006
    2015.707	       0.584
    2015.882	      -0.148
    2015.989	       0.207
    2016.033	       0.107
    2016.145	       0.486
    2016.183	       0.615
    2016.295	       1.073
    2016.645	      -0.145
    2016.776	       0.242
    2016.844	       0.503
    2016.863	       0.568
    2016.883	       0.586
    2016.932	       0.684
    2016.995	       0.265
    2017.014	       0.298
    2017.101	      -0.370
    2017.189	      -0.070
    2017.258	       0.112
    2017.277	       0.214
    2017.301	       0.197
    2017.803	       0.288
    2017.847	       0.205
    2017.896	       0.130
    2017.959	       0.160
    2018.197	       0.772
    2018.636	       0.156
    2018.660	       0.192
    2018.748	       0.150
    2018.767	       0.213
    2018.773	       0.232
    2018.855	       0.492
    2018.967	       0.883
    2019.030	       1.044
    2019.142	       1.258
    2019.162	       1.173
    2019.293	       1.531
    2019.299	       1.392
    2019.644	      -0.192
    2019.844	       0.143
    2019.907	       0.279
    2019.912	       0.275
    2019.975	       0.206
    2020.087	      -0.134
    2020.126	      -0.076
    2020.150	      -0.010
    2020.169	       0.068
    2020.257	      -0.161
    2020.306	      -0.241
    2020.675	       0.016
    2020.781	      -0.206
    2020.787	      -0.176
    2020.831	      -0.567
    2020.869	      -0.471
    2020.918	      -0.311
    2020.962	      -0.122
    2021.068	       0.233
    2021.088	      -0.369
    2021.093	      -0.379
    2021.200	      -0.354
    2021.219	      -0.321
    2021.682	      -0.124
    2021.701	      -0.425
    2021.707	      -0.391
    2021.751	      -0.201
    2021.789	      -0.254
    2021.890	      -0.144
    2022.036	      -0.195
    2022.099	       0.025
    2022.123	       0.123
    2022.164	       0.128
    2022.208	      -0.242
    2022.734	       0.090
    2022.778	       0.213
    2022.822	       0.224
    2022.932	       0.116
    2022.975	       0.553
    2023.148	       0.255
    2023.170	       0.302
    2023.175	       0.317
    2023.236	       0.523
    2023.238	       0.971
    2023.301	       0.721
