The % Sun number measures the percentage of time between sunrise and sunset that sunshine reaches the ground. Total Hours is the average number of sunny hours the city normally has in a year. Clear Days is the average number of days annually when cloud covers at most 30 percent of the sky during daylight hours. Hours of sunshine are the means calculated for 1961 to 1990.
Wikipedia: The MacDonnell Ranges of the Northern Territory, are a 644 km (400 mile) long mountain range located in the centre of Australia (23Â°42â²S 132Â°30â²E), and consist of parallel ridges running to the east and west of Alice Springs.
Mereenie Loop. West MacDonnell National Park | West MacDonnell national park is a vast and spectacular section of the MacDonnell Ranges and an outstanding example of an ancient landscape sculptured over time by climatic elements. The West MacDonnell (Tyurretye) National Park stretches some 161 km due west of Alice Springs.