condition mean min max ZT0-3 2986.05 2986.05 2986.05 ZT4-7 3897.7 3897.7 3897.7 ZT8-11 3340.4 3340.4 3340.4 ZT12-15 3435.3 3435.3 3435.3 ZT16-19 3247.05 3247.05 3247.05 ZT20-23 2620.55 2620.55 2620.55