condition mean min max ZT0-3 76.55 76.55 76.55 ZT4-7 104.2 104.2 104.2 ZT8-11 85.65 85.65 85.65 ZT12-15 61.8 61.8 61.8 ZT16-19 103.19999999999999 103.19999999999999 103.19999999999999 ZT20-23 90.30000000000001 90.30000000000001 90.30000000000001