condition mean min max ZT0-3 0.0185158 0.0185158 0.0185158 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.1069026 0.1069026 0.1069026 ZT16-19 0.11313265 0.11313265 0.11313265 ZT20-23 0.0 0.0 0.0