condition mean min max ZT0-3 31.4118 31.4118 31.4118 ZT4-7 24.2309 24.2309 24.2309 ZT8-11 40.41425 40.41425 40.41425 ZT12-15 32.903949999999995 32.903949999999995 32.903949999999995 ZT16-19 49.9522 49.9522 49.9522 ZT20-23 32.958600000000004 32.958600000000004 32.958600000000004