condition mean min max ZT0-3 25.5605 25.12975 26.39155 ZT4-7 27.117800000000003 27.117800000000003 27.117800000000003 ZT8-11 32.9162 32.9162 32.9162 ZT12-15 38.213875 36.193650000000005 40.2341 ZT16-19 30.7115 30.7115 30.7115 ZT20-23 26.21685 26.21685 26.21685