condition mean min max ZT0-3 31595.3 31595.3 31595.3 ZT4-7 30293.300000000003 30293.300000000003 30293.300000000003 ZT8-11 27505.65 27505.65 27505.65 ZT12-15 24922.2 24922.2 24922.2 ZT16-19 24136.85 24136.85 24136.85 ZT20-23 32927.9 32927.9 32927.9