condition mean min max ZT0-3 40.6495 40.6495 40.6495 ZT4-7 25.617800000000003 25.617800000000003 25.617800000000003 ZT8-11 24.92 24.92 24.92 ZT12-15 60.49665 60.49665 60.49665 ZT16-19 67.51910000000001 67.51910000000001 67.51910000000001 ZT20-23 58.1037 58.1037 58.1037