condition mean min max ZT0-3 0.015616366666666668 0.0 0.0239807 ZT4-7 0.02263405 0.02263405 0.02263405 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.02221995 0.02221995 0.02221995 ZT20-23 0.0 0.0 0.0