condition mean min max ZT0-3 0.01674235 0.01674235 0.01674235 ZT4-7 0.017636699999999998 0.017636699999999998 0.017636699999999998 ZT8-11 0.059218099999999996 0.059218099999999996 0.059218099999999996 ZT12-15 0.0501458 0.0501458 0.0501458 ZT16-19 0.03649015 0.03649015 0.03649015 ZT20-23 0.014146866666666666 0.014146866666666666 0.014146866666666666