At 1:00 P.M., a thermometer reading 70°F is taken outside where the air temperature is -10°F (ten below zero). At 1:02 P.M., the reading is 26°F. At 1:05 P.M., the thermometer is taken back indoors where the air is 70°F. What is the thermometer reading at 1:09 P.M.?
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