condition mean min max ZT0-3 28.097475000000003 26.13275 30.0622 ZT4-7 37.1551 37.1551 37.1551 ZT8-11 46.0815 46.0815 46.0815 ZT12-15 0 0 0 ZT16-19 38.033 38.033 38.033 ZT20-23 37.52405 37.52405 37.52405