Differentiate between annual range of temperature and diurnal range of temperature

Candidates are expected to differentiate between annual range of temperature and diurnal range of temperature.

Annual  range of temperature is the difference between  the   highest and the lowest mean monthly temperature in a year.

Or: It is the difference between the temperatures of the hottest month and the coolest month of the year.

Whereas,

Diurnal range of temperature is the difference between the highest and the lowest temperature for the day.