condition mean min max ZT0-3 2970.15 2970.15 2970.15 ZT4-7 3346.6 3346.6 3346.6 ZT8-11 3741.3 3741.3 3741.3 ZT12-15 3749.05 3749.05 3749.05 ZT16-19 3328.5 3328.5 3328.5 ZT20-23 2925.8999999999996 2925.8999999999996 2925.8999999999996