condition mean min max ZT0-3 0.015974 0.015974 0.015974 ZT4-7 0.02223215 0.02223215 0.02223215 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0219989 0.0219989 0.0219989 ZT16-19 0.0192281 0.0192281 0.0192281 ZT20-23 0.0 0.0 0.0