condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.1126932 0.1126932 0.1126932 ZT8-11 0.0 0.0 0.0 ZT12-15 0.03762325 0.033839 0.0414075 ZT16-19 0.0 0.0 0.0 ZT20-23 0 0 0