It's a great intermediate-level kit with some flexibility, but it isn't too intimidating or difficult to manoeuvre for vapers upgrading their current kit
According to Wikipedia, the US is 51st among nations in annual smoking rates
In 2000, the Federal Trade Commission filed a deceptive advertising campaign arguing that through their advertisements, Santa Fe represented that because Natural American Spirit cigarettes contain no additives, smoking them is less hazardous to a smoker's health than smoking otherwise comparable cigarettes that contain additives. This led to Santa Fe adding the following disclaimer on its packets, No additives in our tobacco does NOT mean a safer cigarette." A decade later, attorneys general from 33 states and the District of Columbia, reached an agreement requiring Santa Fe to add a disclaimer stating, "Organic tobacco does NOT mean a safer cigarette." The hope was that this warning would alert consumers that natural tobacco does not mean safer tobacco

Why we picked it: HyperHEPA filtration captures ultrafine particles that standard HEPA cannot the fraction of cigarette smoke that penetrates deepest into lungs V5-Cell gas filter contains ~5 lbs of activated carbon granules effective for moderate-to-heavy cigarette smoke loads 10-year warranty
For linear correlation, Pearson correlation coefficient was used