condition mean min max ZT0-3 2202.75 2202.75 2202.75 ZT4-7 3391.3 3391.3 3391.3 ZT8-11 3004.7 3004.7 3004.7 ZT12-15 2044.1 2044.1 2044.1 ZT16-19 1073.45 1073.45 1073.45 ZT20-23 1126.7 1126.7 1126.7