condition mean min max ZT0-3 4072.046915 4072.046915 4072.046915 ZT4-7 2556.5168555 2556.5168555 2556.5168555 ZT8-11 2661.42721 2661.42721 2661.42721 ZT12-15 3468.447167 3468.447167 3468.447167 ZT16-19 3546.0482110000003 3546.0482110000003 3546.0482110000003 ZT20-23 2605.2115995000004 2605.2115995000004 2605.2115995000004