Cloud coverage

The cloud coverage diagram reports, for every month of the year the frequency of "clear", "cloudy" or "intermediate" conditions.

As the Cloud cover is reported in tenths of coverage (i.e. 0 is 0/10 covered. 10 is total coverage) for the purpose of this graph we have simplified the scale as per the table below.

Categorization	Color	Tenth of coverage
Clear (BELOW range)		0
Clear (BELOW range)		1
Clear (BELOW range)		2
Clear (BELOW range)		3
Intermediate (IN range)		4
Intermediate (IN range)		5
Intermediate (IN range)		6
Intermediate (IN range)		7
Cloudy (ABOVE range)		8
Cloudy (ABOVE range)		9
Cloudy (ABOVE range)		10

Example cloud coverage graph for San Francisco, USA