condition mean min max ZT0-3 1801.6999999999998 1801.6999999999998 1801.6999999999998 ZT4-7 1151.7 1151.7 1151.7 ZT8-11 1220.95 1220.95 1220.95 ZT12-15 1078.05 1078.05 1078.05 ZT16-19 996.3 996.3 996.3 ZT20-23 1135.9 1135.9 1135.9