condition mean min max ZT0-3 3408.6499999999996 3408.6499999999996 3408.6499999999996 ZT4-7 6346.0 6346.0 6346.0 ZT8-11 5817.15 5817.15 5817.15 ZT12-15 3291.0 3291.0 3291.0 ZT16-19 1468.4 1468.4 1468.4 ZT20-23 1581.35 1581.35 1581.35