condition mean min max ZT0-3 56.661424999999994 51.30285 62.019999999999996 ZT4-7 49.211299999999994 49.211299999999994 49.211299999999994 ZT8-11 48.64015 48.64015 48.64015 ZT12-15 0 0 0 ZT16-19 59.650800000000004 59.650800000000004 59.650800000000004 ZT20-23 63.36715 63.36715 63.36715