condition mean min max ZT0-3 1272.4 1272.4 1272.4 ZT4-7 1137.9 1137.9 1137.9 ZT8-11 1031.0 1031.0 1031.0 ZT12-15 1005.3 1005.3 1005.3 ZT16-19 1344.75 1344.75 1344.75 ZT20-23 1260.15 1260.15 1260.15