condition mean min max ZT0-3 4379.0 4379.0 4379.0 ZT4-7 4374.7 4374.7 4374.7 ZT8-11 5176.15 5176.15 5176.15 ZT12-15 5430.75 5430.75 5430.75 ZT16-19 5418.6 5418.6 5418.6 ZT20-23 5139.85 5139.85 5139.85