condition mean min max ZT0-3 3607.6499999999996 3607.6499999999996 3607.6499999999996 ZT4-7 2440.1 2440.1 2440.1 ZT8-11 2661.6 2661.6 2661.6 ZT12-15 2238.7 2238.7 2238.7 ZT16-19 2633.15 2633.15 2633.15 ZT20-23 3375.95 3375.95 3375.95