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.
Mountain Range Mountain ranges generally belong to the same geological structure, and consist of a series of peaks and ridges surrounded by lowlands and valleys. There are many mountain ranges in Canada, including the Rocky Mountains, the St. Elias Mountains and the Laurentian Mountains. Description . A mountain range is a linear arrangement of mountain peaks and ridges surrounded by adjacent lower land or clearly separated from adjacent ranges by intervening valleys.