condition mean min max ZT0-3 277.55 277.55 277.55 ZT4-7 204.6 204.6 204.6 ZT8-11 250.3 250.3 250.3 ZT12-15 262.15 262.15 262.15 ZT16-19 264.95 264.95 264.95 ZT20-23 262.6 262.6 262.6