condition mean min max ZT0-3 60.65 60.65 60.65 ZT4-7 156.1 156.1 156.1 ZT8-11 145.55 145.55 145.55 ZT12-15 105.15 105.15 105.15 ZT16-19 48.9 48.9 48.9 ZT20-23 50.7 50.7 50.7