condition mean min max ZT0-3 108.078211 108.078211 108.078211 ZT4-7 216.75358599999998 216.75358599999998 216.75358599999998 ZT8-11 341.625992 341.625992 341.625992 ZT12-15 211.664058 211.664058 211.664058 ZT16-19 349.2049095 349.2049095 349.2049095 ZT20-23 315.1578415 315.1578415 315.1578415