condition mean min max ZT0-3 0.21359475 0.0 0.4271895 ZT4-7 1.2776445 1.2776445 1.2776445 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0