condition mean min max ZT0-3 94.7 94.7 94.7 ZT4-7 89.9 89.9 89.9 ZT8-11 146.2 146.2 146.2 ZT12-15 100.75 100.75 100.75 ZT16-19 88.30000000000001 88.30000000000001 88.30000000000001 ZT20-23 134.55 134.55 134.55