condition mean min max ZT0-3 21.4544 21.4544 21.4544 ZT4-7 24.516199999999998 24.516199999999998 24.516199999999998 ZT8-11 14.7586 14.7586 14.7586 ZT12-15 8.08541 8.08541 8.08541 ZT16-19 14.59105 14.59105 14.59105 ZT20-23 15.012599999999999 15.012599999999999 15.012599999999999