condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0442046 0.0442046 0.0442046 ZT8-11 0.04796615 0.04796615 0.04796615 ZT12-15 0.05802 0.05802 0.05802 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0