{ "startDate": "2017-03-23T00:31:13Z", "stopDate": "2025-03-29T23:59:59Z", "sampleStartDate": "2025-03-28T00:00:10Z", "sampleStopDate": "2025-03-29T00:00Z", "cadence": "PT7.98447S", "x_cadence_fraction": 0.2850605105257805, "x_cadence_note": "Counts based on variable 'epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/erg/mepe/l2/3dflux/2017/erg_mepe_l2_3dflux_20170323_v01_01.cdf. The most common cadence, 7984470000 [ns] = PT7.98447S, occurred for 28.5061% of the 2803 timesteps. 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