condition mean min max ZT0-3 35.797777780000004 35.797777780000004 35.797777780000004 ZT4-7 24.53222222 24.53222222 24.53222222 ZT8-11 24.288888886666665 24.288888886666665 24.288888886666665 ZT12-15 47.07888889 47.07888889 47.07888889 ZT16-19 60.78777778 60.78777778 60.78777778 ZT20-23 49.57888889 49.57888889 49.57888889