condition mean min max ZT0-3 8344.9 8344.9 8344.9 ZT4-7 6789.9 6789.9 6789.9 ZT8-11 6946.2 6946.2 6946.2 ZT12-15 9561.95 9561.95 9561.95 ZT16-19 10397.75 10397.75 10397.75 ZT20-23 8524.849999999999 8524.849999999999 8524.849999999999