condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.04186881983333333 0.0 0.08373763966666666 ZT16-19 0.0 0.0 0.0 ZT20-23 0.014090391999999998 0.0 0.028180783999999997