condition mean min max ZT0-3 93.0 93.0 93.0 ZT4-7 63.6 63.6 63.6 ZT8-11 76.30000000000001 76.30000000000001 76.30000000000001 ZT12-15 72.85 72.85 72.85 ZT16-19 130.5 130.5 130.5 ZT20-23 114.95 114.95 114.95