condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 3.3238499999999997 3.3238499999999997 3.3238499999999997 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 1.402095 0.0 2.80419 ZT20-23 0 0 0