condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 1.9113850000000001 1.9113850000000001 1.9113850000000001 ZT12-15 3.326885 3.326885 3.326885 ZT16-19 0.37482 0.37482 0.37482 ZT20-23 0.5981453 0.5981453 0.5981453