condition mean min max ZT0-3 3.4784 3.4784 3.4784 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 8.02244 8.02244 8.02244 ZT16-19 0.0 0.0 0.0 ZT20-23 9.24756 9.24756 9.24756