condition mean min max ZT0-3 1203.275 1203.275 1203.275 ZT4-7 1197.415 1197.415 1197.415 ZT8-11 736.8040000000001 736.8040000000001 736.8040000000001 ZT12-15 481.54499999999996 481.54499999999996 481.54499999999996 ZT16-19 584.1985 584.1985 584.1985 ZT20-23 921.963 921.963 921.963