condition mean min max ZT0-3 69.7416 69.7416 69.7416 ZT4-7 27.301900000000003 27.301900000000003 27.301900000000003 ZT8-11 92.10155 92.10155 92.10155 ZT12-15 64.38980000000001 64.38980000000001 64.38980000000001 ZT16-19 82.21975 82.21975 82.21975 ZT20-23 81.6005 81.6005 81.6005