condition mean min max ZT0-3 887.05 887.05 887.05 ZT4-7 1787.6 1787.6 1787.6 ZT8-11 1461.7 1461.7 1461.7 ZT12-15 1089.65 1089.65 1089.65 ZT16-19 1087.5 1087.5 1087.5 ZT20-23 1232.4 1232.4 1232.4