condition mean min max ZT0-3 0.0200418 0.0200418 0.0200418 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.040636 0.040636 0.040636 ZT20-23 0.0 0.0 0.0