condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.09522016366666668 0.0 0.19044032733333335 ZT8-11 0.065135028 0.0 0.130270056 ZT12-15 0.13240052833333332 0.131752757 0.13304829966666668 ZT16-19 0.032479666000000004 0.0 0.06495933200000001 ZT20-23 0.07066631899999999 0.0 0.14133263799999998