condition mean min max ZT0-3 0.02148 0.0 0.06444 ZT4-7 0.15906930000000002 0.15906930000000002 0.15906930000000002 ZT8-11 0.0662965 0.0662965 0.0662965 ZT12-15 0.069187175 0.06913875 0.06923560000000001 ZT16-19 0.0309675 0.0309675 0.0309675 ZT20-23 0.0 0.0 0.0