condition mean min max ZT0-3 44.653333333333336 43.2051 46.779700000000005 ZT4-7 42.55055 42.55055 42.55055 ZT8-11 37.15565 37.15565 37.15565 ZT12-15 50.25495 47.45325 53.056650000000005 ZT16-19 40.06355 40.06355 40.06355 ZT20-23 37.55175 37.55175 37.55175