condition mean min max ZT0-3 1773.9 1773.9 1773.9 ZT4-7 1599.3 1599.3 1599.3 ZT8-11 1726.65 1726.65 1726.65 ZT12-15 1481.6999999999998 1481.6999999999998 1481.6999999999998 ZT16-19 1559.65 1559.65 1559.65 ZT20-23 1478.9 1478.9 1478.9