condition mean min max ZT0-3 140.95 140.95 140.95 ZT4-7 86.4 86.4 86.4 ZT8-11 105.9 105.9 105.9 ZT12-15 146.65 146.65 146.65 ZT16-19 122.2 122.2 122.2 ZT20-23 172.10000000000002 172.10000000000002 172.10000000000002