condition mean min max ZT0-3 3283.4 3283.4 3283.4 ZT4-7 3013.5 3013.5 3013.5 ZT8-11 2643.7 2643.7 2643.7 ZT12-15 1936.8 1936.8 1936.8 ZT16-19 1490.3 1490.3 1490.3 ZT20-23 2056.4 2056.4 2056.4