condition mean min max ZT0-3 11537.95 11537.95 11537.95 ZT4-7 12009.1 12009.1 12009.1 ZT8-11 12419.15 12419.15 12419.15 ZT12-15 14178.2 14178.2 14178.2 ZT16-19 13567.5 13567.5 13567.5 ZT20-23 13041.9 13041.9 13041.9