condition mean min max ZT0-3 1450.6999999999998 1450.6999999999998 1450.6999999999998 ZT4-7 992.5 992.5 992.5 ZT8-11 710.0 710.0 710.0 ZT12-15 1541.1499999999999 1541.1499999999999 1541.1499999999999 ZT16-19 1578.0 1578.0 1578.0 ZT20-23 1464.9 1464.9 1464.9