condition mean min max ZT0-3 378.428258 378.428258 378.428258 ZT4-7 766.0677705 766.0677705 766.0677705 ZT8-11 744.1503205 744.1503205 744.1503205 ZT12-15 758.1458595 758.1458595 758.1458595 ZT16-19 464.7325975 464.7325975 464.7325975 ZT20-23 365.6115655 365.6115655 365.6115655