condition mean min max ZT0-3 199.0 199.0 199.0 ZT4-7 158.0 158.0 158.0 ZT8-11 122.25 122.25 122.25 ZT12-15 162.39999999999998 162.39999999999998 162.39999999999998 ZT16-19 199.9 199.9 199.9 ZT20-23 198.7 198.7 198.7