condition mean min max ZT0-3 12.312299999999999 11.471699999999998 13.152899999999999 ZT4-7 13.35725 13.35725 13.35725 ZT8-11 12.206900000000001 12.206900000000001 12.206900000000001 ZT12-15 0 0 0 ZT16-19 14.39525 14.39525 14.39525 ZT20-23 12.89705 12.89705 12.89705