At sea level, the partial pressure of oxygen should be between 75 and 100 millimeters of mercury, and the partial pressure of carbon dioxide should be between 38 and 42 millimeters of mercury, notes MedlinePlus. The oxygen saturation of the blood should be between 94 and 100 percent.
Clean gas ranges regularly to extend their lives and keep them in safe working condition. Always turn off the gas and let the range cool completely before cleaning or maintenance.
Some of the best gas ranges of 2015 include the Bosch HDI7282U, Electrolux EI30GF35JS and Fisher & Paykel OR36SDBGX2, according to Top Ten Reviews. These ranges receive favorable reviews for their functionality, features, design and ease of use.
KitchenAid is the manufacturer responsible for the best gas range available. In its 2013 list of cooktop and oven award winners, Reviewed.com named the KitchenAid KGRS308BSS the top gas range available.
Gas ranges are available on the websites for Best Buy, Home Depot and Lowe’s. All these websites provide shoppers with a list of top-rated gas ranges from major manufacturers, accompanied by their prices, specifications, user reviews and ratings, as of 2015.
The different tiers of gas ranges vary by the heat output, oven features, style options and controls. As of 2015, gas ranges start at $399 for standard models and go to more than $3,000 for premium or professional ranges with special features.
Shoppers can buy gas range covers directly from manufacturers such as StoveTopper and the Cooktop Cover as well as from retailers online at Amazon.com, as of 2015. All three vendors offer an array of different sizes to help ensure that covers match the exact dimensions of customers' stoves.
Samsung gas ranges are some of the top-rated gas ranges on the market, according to 2014 reviews at Consumer Reports. Three Samsung NX-series ranges topped the ratings, with models from LG, Frigidaire and Kenmore also on the list of best gas ranges.
The best gas range at any price is the Kenmore Elite 78923, according to Good Housekeeping, noted for it's versatile dual ovens. Their pick for budget ranges is the GE JGB800SEPSS, with fast and even heating, a griddle burner and a warmer underneath the oven.
The single-oven LG LRG3095ST and double-oven LG LDG3036ST received high marks at ConsumerSearch.com for all-around performance and features. Reviewers also liked the Whirlpool WFG540H0A as a good alternative for the budget-conscious and recommended the Whirlpool WFG510S0A among basic models.