condition mean min max ZT0-3 39.8743 31.2911 45.7099 ZT4-7 36.4356 36.4356 36.4356 ZT8-11 44.39845 44.39845 44.39845 ZT12-15 66.52850000000001 65.43675 67.62025 ZT16-19 63.4088 63.4088 63.4088 ZT20-23 55.471900000000005 55.471900000000005 55.471900000000005