condition mean min max ZT0-3 2141.25 2141.25 2141.25 ZT4-7 963.1 963.1 963.1 ZT8-11 858.8 858.8 858.8 ZT12-15 911.65 911.65 911.65 ZT16-19 1657.0 1657.0 1657.0 ZT20-23 2131.95 2131.95 2131.95