condition mean min max ZT0-3 1623.6 1623.6 1623.6 ZT4-7 1217.0 1217.0 1217.0 ZT8-11 1011.15 1011.15 1011.15 ZT12-15 1116.75 1116.75 1116.75 ZT16-19 1044.45 1044.45 1044.45 ZT20-23 1248.75 1248.75 1248.75