condition mean min max ZT0-3 76.4 76.4 76.4 ZT4-7 63.1 63.1 63.1 ZT8-11 91.65 91.65 91.65 ZT12-15 147.7 147.7 147.7 ZT16-19 117.60000000000001 117.60000000000001 117.60000000000001 ZT20-23 106.55 106.55 106.55