Elec_Counts[Epoch=360,Telesc...=3,Sector=36,Elec_C...=10] (cnts/s) We will total over the 1st index, then the 1st index again. Elec_Counts=2081.9 cnts/s dataset[Epoch=360,Elec_C...=10] (cnts/s) 839.66 cnts/s 702.50 cnts/s 583.85 cnts/s