condition mean min max ZT0-3 2318.5 2318.5 2318.5 ZT4-7 2738.0 2738.0 2738.0 ZT8-11 2432.75 2432.75 2432.75 ZT12-15 1524.5 1524.5 1524.5 ZT16-19 1399.45 1399.45 1399.45 ZT20-23 1432.65 1432.65 1432.65