100 degrees [suitable for ages under 50 years old]150 degrees [suitable for ages 50-54 years old]200 degrees [suitable for ages 55-59 years old]250 degrees [suitable for ages 60-64 years old]300 degrees [suitable for ages 65-69]350 degrees [suitable for ages 70-74 years old]400 degrees [suitable for ages 75 and above]