condition mean min max ZT0-3 79.29249 79.29249 79.29249 ZT4-7 60.708271499999995 60.708271499999995 60.708271499999995 ZT8-11 84.44844649999999 84.44844649999999 84.44844649999999 ZT12-15 66.73073550000001 66.73073550000001 66.73073550000001 ZT16-19 85.8301835 85.8301835 85.8301835 ZT20-23 61.52942350000001 61.52942350000001 61.52942350000001