Counts based on variable 'epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/mms/mms2/feeps/srvy/l2/ion/2015/09/mms2_feeps_srvy_l2_ion_20150901000000_v7.1.1.cdf. The most common cadence, 2419712000 [ns] = PT2.419712S, occurred for 13.6245% of the 3229 timesteps. 

Counts based on variable 'epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/mms/mms2/feeps/srvy/l2/ion/2025/03/mms2_feeps_srvy_l2_ion_20250327000000_v7.5.1.cdf. The most common cadence, 2459072000 [ns] = PT2.459072S, occurred for 15.8531% of the 5570 timesteps. 