7Timer Weather Panel:

Weather Data:

As well as recording VS observations I also record the number of clear or partly clear nights(c/c) when observing can be done.My criteria for clear is a sky ( clear) with less than 50% cloud or at least a prolonged period of total clear sky and for a partly clear sky (cc) is more than 50% cloud cover or persitant moving cloud. These are somewhat ambiguous definitions, the important figure is the total number of nights when some observing can be done. I have plotted totals for clear and partly clear nights in the graphs below. To the right of the plot is the data table for these charts.