Would it be possible to add a field whereby one could enter one's altitude. As you know, the temperature at which water (adjusting for dissolved solids) boils is also a function of altitude. For example, here in Ann Arbor, Michigan, and weren't not in mountains, water will not boil at 100C/212F, because elevation varies from 250m/750ft to 309m/1015ft, at which water will boil (depending on extant barametric pressure) from 99.2C/210.7F to 99.0/210.2F. I know that's not a big difference, but if one's in Denver, Colorado, then boiling would be at 95C/202F. Just something that MAY be important.