condition mean min max ZT0-3 254.95 254.95 254.95 ZT4-7 288.2 288.2 288.2 ZT8-11 187.05 187.05 187.05 ZT12-15 131.75 131.75 131.75 ZT16-19 79.5 79.5 79.5 ZT20-23 120.80000000000001 120.80000000000001 120.80000000000001