Fog in the morning caused the ground to emit heat, air, on the ground floor next to the cold floor with water until the temperature is equal to the points accrued to make steam in the air condensing into fog.
Morning fog caused Ground heat And the cold air on the ground floor adjacent to the floor. The dew point temperature of water vapor in the air condenses into fog.
The morning fog caused by the ground ground heat. The ground floor adjacent floor cooling with air until there is dew point temperature of the vapor in the air condense fog.