# date (year)	 area (km^2)
    2013.822	       0.000
    2013.841	      -0.047
    2013.904	      -0.073
    2013.910	      -0.080
    2013.929	      -0.020
    2014.079	      -0.020
    2014.104	       0.188
    2014.216	      -0.111
    2014.255	      -0.146
    2014.260	      -0.130
    2014.279	      -0.091
    2014.649	      -0.119
    2014.737	       0.019
    2014.742	       0.056
    2014.781	      -0.022
    2014.893	      -0.116
    2014.912	      -0.131
    2015.005	      -0.210
    2015.044	      -0.134
    2015.093	      -0.120
    2015.156	      -0.239
    2015.181	      -0.179
    2015.244	      -0.269
    2015.682	      -0.386
    2015.707	      -0.209
    2015.795	      -0.148
    2015.838	       0.011
    2015.858	      -0.036
    2015.877	       0.078
    2015.901	      -0.010
    2015.926	       0.010
    2015.989	       0.121
    2016.033	       0.039
    2016.057	       0.068
    2016.145	      -0.087
    2016.844	      -0.014
    2016.863	       0.073
    2016.883	       0.009
    2016.932	       0.058
    2016.970	      -0.060
    2016.975	       0.082
    2017.014	       0.019
    2017.019	      -0.078
    2017.038	       0.017
    2017.101	       0.046
    2017.145	       0.092
    2017.170	      -0.064
    2017.277	      -0.031
    2017.759	       0.054
    2017.764	       0.048
    2017.784	       0.051
    2017.803	       0.052
    2017.896	      -0.036
    2017.915	      -0.134
    2017.959	      -0.055
    2017.984	      -0.178
    2018.027	      -0.107
    2018.047	      -0.118
    2018.071	      -0.402
    2018.090	      -0.237
    2018.134	      -0.347
    2018.197	      -0.498
    2018.660	      -0.059
    2018.704	       0.064
    2018.748	       0.143
    2018.767	       0.048
    2018.855	      -0.099
    2018.899	       0.103
    2018.967	       0.195
    2019.011	      -0.017
    2019.030	      -0.245
    2019.068	      -0.059
    2019.205	      -0.201
    2019.230	      -0.180
    2019.249	      -0.191
    2019.293	      -0.173
    2019.668	      -0.223
    2019.775	       0.089
    2019.825	       0.049
    2019.907	       0.108
    2019.932	       0.184
    2019.951	       0.078
    2019.956	       0.106
    2019.975	       0.154
    2020.044	       0.035
    2020.063	      -0.266
    2020.126	      -0.089
    2020.131	      -0.083
    2020.150	      -0.143
    2020.194	      -0.153
    2020.219	      -0.450
    2020.281	      -0.417
    2020.738	       0.060
    2020.781	      -0.119
    2020.918	      -0.266
    2021.025	      -0.269
    2021.068	      -0.395
    2021.088	      -0.300
    2021.137	      -0.384
    2021.219	      -0.514
    2021.707	      -0.076
    2021.814	      -0.087
    2021.877	      -0.026
    2022.036	      -0.083
    2022.074	      -0.397
    2022.121	      -0.380
    2022.164	      -0.361
    2022.167	      -0.343
    2022.208	      -0.368
    2022.233	      -0.395
    2022.255	      -0.366
    2022.644	       0.088
    2022.734	       0.109
    2022.737	       0.088
    2022.778	       0.105
    2022.797	      -0.042
    2022.803	       0.179
    2022.822	       0.034
    2022.825	       0.322
    2022.932	      -0.088
    2022.951	      -0.060
    2022.978	      -0.107
    2022.995	      -0.021
    2023.060	      -0.225
    2023.066	      -0.257
    2023.088	      -0.244
    2023.126	      -0.481
    2023.148	      -0.491
    2023.153	      -0.472
    2023.192	      -0.153
    2023.197	      -0.433
    2023.236	      -0.216
    2023.258	      -0.451
