condition mean min max ZT0-3 33.01775 33.01775 33.01775 ZT4-7 32.19185 32.19185 32.19185 ZT8-11 23.167900000000003 23.167900000000003 23.167900000000003 ZT12-15 28.09485 28.09485 28.09485 ZT16-19 29.57145 29.57145 29.57145 ZT20-23 31.7037 31.7037 31.7037