condition mean min max ZT0-3 77.19999999999999 77.19999999999999 77.19999999999999 ZT4-7 57.1 57.1 57.1 ZT8-11 57.95 57.95 57.95 ZT12-15 80.05 80.05 80.05 ZT16-19 116.1 116.1 116.1 ZT20-23 67.1 67.1 67.1