condition mean min max ZT0-3 203.65 203.65 203.65 ZT4-7 114.5 114.5 114.5 ZT8-11 199.35 199.35 199.35 ZT12-15 177.60000000000002 177.60000000000002 177.60000000000002 ZT16-19 186.64999999999998 186.64999999999998 186.64999999999998 ZT20-23 154.35 154.35 154.35