DB02 ->Detailed anaysis

Good afternoon

I am trying to anylize DB02 Space statistics. Please assist with the following?

Why is the total size (kbyte) of a type "Index Parti" a total of "0' , while the 'Chg/day' size is for instance 1066. The table name in this case is: "DB02: /BIC/FDFM_REPL0000000023 "

Should the total size not be = or > than the daily change?

Thanks

Cj Faurie