condition mean min max ZT0-3 42.995557 42.995557 42.995557 ZT4-7 155.024245 155.024245 155.024245 ZT8-11 118.44257250000001 118.44257250000001 118.44257250000001 ZT12-15 71.502456 71.502456 71.502456 ZT16-19 46.035047 46.035047 46.035047 ZT20-23 25.956340500000003 25.956340500000003 25.956340500000003