condition mean min max ZT0-3 96.575031 96.575031 96.575031 ZT4-7 99.8729325 99.8729325 99.8729325 ZT8-11 106.81275500000001 106.81275500000001 106.81275500000001 ZT12-15 105.2507425 105.2507425 105.2507425 ZT16-19 142.899471 142.899471 142.899471 ZT20-23 129.6600835 129.6600835 129.6600835