condition mean min max ZT0-3 44.07325 44.07325 44.07325 ZT4-7 42.074799999999996 42.074799999999996 42.074799999999996 ZT8-11 63.24365 63.24365 63.24365 ZT12-15 67.32965 67.32965 67.32965 ZT16-19 62.939 62.939 62.939 ZT20-23 44.80695 44.80695 44.80695