condition mean min max ZT0-3 0.03990122 0.0 0.07980244 ZT4-7 0.0 0.0 0.0 ZT8-11 0.24799167149999998 0.1449727275 0.35101061549999996 ZT12-15 0.12083878675000001 0.0 0.24167757350000002 ZT16-19 0.07288662 0.0 0.14577324 ZT20-23 0.041242021000000004 0.0 0.08248404200000001