condition mean min max ZT0-3 29.91716186675 11.7001709435 48.13415279 ZT4-7 9.130314484500001 8.9944398495 9.2661891195 ZT8-11 22.215122469999997 13.78954303 30.640701909999997 ZT12-15 45.8664229775 39.259890515 52.47295544 ZT16-19 32.592135427500004 31.63239812 33.551872735 ZT20-23 33.807011474999996 32.383871125 35.230151825