condition mean min max ZT0-3 0.45957515000000004 0.1277705 1.097215 ZT4-7 0.3221855 0.3221855 0.3221855 ZT8-11 0.0255096 0.0255096 0.0255096 ZT12-15 0.10471275 0.0 0.2094255 ZT16-19 0.0238313 0.0238313 0.0238313 ZT20-23 0.05478355 0.05478355 0.05478355