condition mean min max ZT0-3 38.1 38.1 38.1 ZT4-7 19.9 19.9 19.9 ZT8-11 3.0999999999999996 3.0999999999999996 3.0999999999999996 ZT12-15 43.2 43.2 43.2 ZT16-19 36.05 36.05 36.05 ZT20-23 44.2 44.2 44.2