condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.10910585716666667 0.027801655999999998 0.19041005833333333 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.016889673666666664 0.0 0.03377934733333333 ZT20-23 0.023234941999999998 0.0 0.046469883999999996