condition mean min max ZT0-3 796.9042996000001 748.7380054 845.0705938 ZT4-7 688.8872569 686.7639115333334 691.0106022666668 ZT8-11 723.8966596500001 691.77498 756.0183393000001 ZT12-15 722.6111691833333 664.1558833 781.0664550666667 ZT16-19 657.4490565 573.4115265333334 741.4865864666666 ZT20-23 579.0721175 564.1353868 594.0088482