condition mean min max ZT0-3 0.1457715 0.0 0.291543 ZT4-7 0.0 0.0 0.0 ZT8-11 1.8875800000000003 1.8875800000000003 1.8875800000000003 ZT12-15 0 0 0 ZT16-19 0.4947095 0.4947095 0.4947095 ZT20-23 0.0 0.0 0.0