condition mean min max ZT0-3 66.9868 66.9868 66.9868 ZT4-7 49.94605 49.94605 49.94605 ZT8-11 65.80865 65.80865 65.80865 ZT12-15 86.01155 86.01155 86.01155 ZT16-19 74.19980000000001 74.19980000000001 74.19980000000001 ZT20-23 66.6798 66.6798 66.6798