condition mean min max ZT0-3 129.131221 129.131221 129.131221 ZT4-7 91.885645 91.885645 91.885645 ZT8-11 85.849706 85.849706 85.849706 ZT12-15 152.53504800000002 152.53504800000002 152.53504800000002 ZT16-19 112.3116665 112.3116665 112.3116665 ZT20-23 147.915634 147.915634 147.915634