Hi Oscar,
Partition ID : an indication of the cache partition this line is in.
Cache partitions can be made because of a sync parameter mapped to a load argument or because of the "Partition by requestor and device identity" on the cache group policy, for example.
LMD : This is the timestamp of the latest update of this line in the cache.
If you want to know if a line was updated after an operation, check this value before and after the operation.
I am not sure about other columns, will check and update you shortly.
Rrgds,
Jitendra