condition mean min max ZT0-3 13.26435 11.89375 14.63495 ZT4-7 10.111699999999999 10.111699999999999 10.111699999999999 ZT8-11 10.79615 10.79615 10.79615 ZT12-15 0 0 0 ZT16-19 13.946850000000001 13.946850000000001 13.946850000000001 ZT20-23 12.8004 12.8004 12.8004