condition mean min max ZT0-3 108.89999999999999 108.89999999999999 108.89999999999999 ZT4-7 200.1 200.1 200.1 ZT8-11 222.10000000000002 222.10000000000002 222.10000000000002 ZT12-15 235.75 235.75 235.75 ZT16-19 171.15 171.15 171.15 ZT20-23 158.95 158.95 158.95