condition mean min max ZT0-3 0.0934675 0.0 0.1500535 ZT4-7 0.0232819 0.0232819 0.0232819 ZT8-11 0.2169345 0.2169345 0.2169345 ZT12-15 0.37000750000000004 0.352961 0.387054 ZT16-19 0.3467135 0.3467135 0.3467135 ZT20-23 0.1934125 0.1934125 0.1934125