{
"lat":["51.48 N"],
"lon":["-0.46 W"],
"elevation":[27.31],
"z":[37.31,54.74,121.58,212.65,328.52,474.09,658.84,884.66,1131.52,1383.66,1642.43,1908.00,2300.19,2814.78,3328.68,3842.38,4355.10,4866.16,5375.12,5881.89,6387.40,6893.69,7403.07,7917.15,8437.28,8965.22,9502.24,10049.37,10607.32,11175.57,11755.33,12349.06,12952.48,13556.83,14158.75,14759.33,15358.38,15954.53,16547.87,17139.69,17730.89,18320.95,18909.56,19497.33,20084.60],
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}