condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.4599985 0.4599985 0.4599985 ZT8-11 0.4657665 0.4657665 0.4657665 ZT12-15 1.1937975 0.506745 1.88085 ZT16-19 1.321832 1.321832 1.321832 ZT20-23 1.0002625 1.0002625 1.0002625