condition mean min max ZT0-3 425.6 425.6 425.6 ZT4-7 621.1 621.1 621.1 ZT8-11 624.1500000000001 624.1500000000001 624.1500000000001 ZT12-15 407.7 407.7 407.7 ZT16-19 177.4 177.4 177.4 ZT20-23 224.2 224.2 224.2