condition mean min max ZT0-3 6250.549999999999 6250.549999999999 6250.549999999999 ZT4-7 4813.4 4813.4 4813.4 ZT8-11 5431.1 5431.1 5431.1 ZT12-15 5873.15 5873.15 5873.15 ZT16-19 6077.55 6077.55 6077.55 ZT20-23 6065.25 6065.25 6065.25