A question about hc-3 dataset

Hello,

I have interpreted that in the table "cell" (in the metadata tables) the field "id" refers to a specific cell, which is the same id specified in "cellid" in table "spike_count", and that in "session_a" the field "duration" refers to all the recording time in seconds for each cell. I would like to know: should I sum all the "nSpikes" of the same cell id (from different sessions) from the "spike_count" table and divide it by the value in the "duration" field to have an average firing rate? Would this be a correct assumption?

Juliana.