condition mean min max ZT0-3 1088.15 1088.15 1088.15 ZT4-7 1755.7 1755.7 1755.7 ZT8-11 1209.15 1209.15 1209.15 ZT12-15 1688.9 1688.9 1688.9 ZT16-19 1422.25 1422.25 1422.25 ZT20-23 1056.1999999999998 1056.1999999999998 1056.1999999999998