condition mean min max ZT0-3 2730.95 2730.95 2730.95 ZT4-7 2251.7 2251.7 2251.7 ZT8-11 2176.8 2176.8 2176.8 ZT12-15 2417.4 2417.4 2417.4 ZT16-19 2439.65 2439.65 2439.65 ZT20-23 2855.45 2855.45 2855.45