condition mean min max ZT0-3 1434.8 1434.8 1434.8 ZT4-7 1591.8 1591.8 1591.8 ZT8-11 1413.75 1413.75 1413.75 ZT12-15 1464.3 1464.3 1464.3 ZT16-19 1393.15 1393.15 1393.15 ZT20-23 1275.95 1275.95 1275.95