condition mean min max ZT0-3 0.36656425000000004 0.0 0.7331285000000001 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.2190615 0.2190615 0.2190615 ZT20-23 0.441308 0.441308 0.441308