condition mean min max ZT0-3 9.33914 7.71273 10.96555 ZT4-7 7.154165000000001 7.154165000000001 7.154165000000001 ZT8-11 13.309000000000001 13.309000000000001 13.309000000000001 ZT12-15 0 0 0 ZT16-19 13.324349999999999 13.324349999999999 13.324349999999999 ZT20-23 13.6664 13.6664 13.6664