condition mean min max ZT0-3 115.475 115.475 115.475 ZT4-7 1153.735 1153.735 1153.735 ZT8-11 285.025 285.025 285.025 ZT12-15 40.40025 40.40025 40.40025 ZT16-19 30.82025 30.82025 30.82025 ZT20-23 21.0799 21.0799 21.0799