condition mean min max ZT0-3 24.127825 22.24005 26.0156 ZT4-7 34.387100000000004 34.387100000000004 34.387100000000004 ZT8-11 34.5886 34.5886 34.5886 ZT12-15 0 0 0 ZT16-19 34.28115 34.28115 34.28115 ZT20-23 32.288399999999996 32.288399999999996 32.288399999999996