condition mean min max ZT0-3 14.430900000000001 13.799700000000001 15.0621 ZT4-7 26.205750000000002 26.205750000000002 26.205750000000002 ZT8-11 40.7387 40.7387 40.7387 ZT12-15 0 0 0 ZT16-19 33.4971 33.4971 33.4971 ZT20-23 26.73375 26.73375 26.73375