condition mean min max ZT0-3 0.32674200000000003 0.0954145 0.4536135 ZT4-7 0.0786515 0.0786515 0.0786515 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.01220215 0.01220215 0.01220215 ZT20-23 0.3190395 0.3190395 0.3190395