# date (year)	 area (km^2)
    2013.910	       0.000
    2013.929	       0.066
    2013.948	       0.101
    2013.953	       0.116
    2013.997	       0.078
    2014.079	      -0.057
    2014.104	       0.033
    2014.216	      -0.084
    2014.255	       0.023
    2014.260	       0.041
    2014.655	       0.720
    2014.674	       0.593
    2014.718	       0.489
    2014.737	       0.358
    2014.742	       0.380
    2014.893	       0.598
    2015.044	       0.668
    2015.156	       0.128
    2015.307	       0.576
    2015.682	       0.404
    2015.707	       0.158
    2015.877	       0.109
    2015.882	       0.156
    2015.989	      -0.611
    2016.014	      -0.752
    2016.033	      -0.576
    2016.057	      -0.538
    2016.145	      -0.611
    2016.645	      -0.442
    2016.776	      -0.764
    2016.863	      -0.549
    2016.883	      -0.576
    2016.932	      -0.399
    2016.970	      -0.437
    2016.975	      -0.234
    2016.995	      -0.249
    2017.014	      -0.135
    2017.038	       0.087
    2017.189	      -0.337
    2017.258	      -0.660
    2017.277	      -0.598
    2017.759	      -0.477
    2017.803	      -0.537
    2017.959	      -0.761
    2018.090	      -0.369
    2018.153	      -0.615
    2018.159	      -0.498
    2018.197	      -0.779
    2018.203	      -0.708
    2018.636	      -0.524
    2018.660	      -1.149
    2018.729	      -1.146
    2018.748	      -1.105
    2018.773	      -1.261
    2018.967	      -0.408
    2018.986	      -0.484
    2019.030	      -0.349
    2019.142	      -0.192
    2019.205	       0.059
    2019.230	      -0.442
    2019.249	      -0.588
    2019.255	      -0.525
    2019.293	      -0.484
    2019.644	      -0.598
    2019.668	      -0.901
    2019.781	      -0.746
    2019.844	      -1.038
    2019.907	      -0.772
    2019.932	      -0.808
    2019.956	      -0.779
    2019.975	      -0.764
    2020.000	      -0.666
    2020.044	      -0.599
    2020.063	      -0.679
    2020.087	      -0.609
    2020.126	      -0.647
    2020.150	      -0.601
    2020.169	      -0.547
    2020.281	      -1.227
    2020.694	      -0.782
    2020.781	      -1.096
    2020.831	      -0.825
    2020.918	      -1.003
    2020.962	      -1.023
    2021.068	      -1.002
    2021.219	      -1.475
    2021.701	      -0.705
    2021.707	      -0.614
    2021.789	      -0.557
    2021.890	      -0.699
    2021.964	      -0.528
    2022.036	      -0.437
    2022.099	      -0.904
    2022.164	      -0.629
    2022.208	      -0.543
    2022.255	      -1.144
    2022.710	      -0.553
    2022.734	      -0.370
    2022.737	      -0.407
    2022.778	      -0.230
    2022.822	      -0.390
    2022.825	      -0.293
    2022.929	      -0.403
    2022.932	      -0.257
    2022.934	       0.076
    2023.126	      -0.473
    2023.148	      -0.471
    2023.214	      -1.145
    2023.236	      -1.025
    2023.301	      -1.363
