condition mean min max ZT0-3 39.9103 39.9103 39.9103 ZT4-7 27.9613 27.9613 27.9613 ZT8-11 39.878249999999994 39.878249999999994 39.878249999999994 ZT12-15 36.5648 36.5648 36.5648 ZT16-19 62.16245 62.16245 62.16245 ZT20-23 44.4664 44.4664 44.4664