condition mean min max ZT0-3 379.4 379.4 379.4 ZT4-7 436.3 436.3 436.3 ZT8-11 315.4 315.4 315.4 ZT12-15 356.3 356.3 356.3 ZT16-19 392.45000000000005 392.45000000000005 392.45000000000005 ZT20-23 350.4 350.4 350.4