condition mean min max ZT0-3 37.804050000000004 37.804050000000004 37.804050000000004 ZT4-7 32.211800000000004 32.211800000000004 32.211800000000004 ZT8-11 24.2443 24.2443 24.2443 ZT12-15 22.34225 22.34225 22.34225 ZT16-19 35.5206 35.5206 35.5206 ZT20-23 33.9025 33.9025 33.9025