condition mean min max ZT0-3 41.1 41.1 41.1 ZT4-7 123.5 123.5 123.5 ZT8-11 152.3 152.3 152.3 ZT12-15 82.1 82.1 82.1 ZT16-19 60.9 60.9 60.9 ZT20-23 59.2 59.2 59.2