condition mean min max ZT0-3 99.6 99.6 99.6 ZT4-7 196.4 196.4 196.4 ZT8-11 285.70000000000005 285.70000000000005 285.70000000000005 ZT12-15 190.35 190.35 190.35 ZT16-19 174.65 174.65 174.65 ZT20-23 154.65 154.65 154.65