condition mean min max ZT0-3 103.02618333333334 76.536 122.5615 ZT4-7 41.376450000000006 41.376450000000006 41.376450000000006 ZT8-11 18.31185 18.31185 18.31185 ZT12-15 53.70475 51.717 55.692499999999995 ZT16-19 59.4486 59.4486 59.4486 ZT20-23 97.94425000000001 97.94425000000001 97.94425000000001