condition mean min max ZT0-3 4246.9 4246.9 4246.9 ZT4-7 2062.3 2062.3 2062.3 ZT8-11 2905.25 2905.25 2905.25 ZT12-15 3964.05 3964.05 3964.05 ZT16-19 4532.3 4532.3 4532.3 ZT20-23 4819.549999999999 4819.549999999999 4819.549999999999