Hmm - maybe download your csv data and see if it reveals anything? It could be some kind of rounding. There's also http://www.windowsazure.com/en-us/support/und

Hmm - maybe download your csv data and see if it reveals anything? It could be some kind of rounding. There's also http://www.windowsazure.com/en-us/support/understand-your-bill/ http://www.windowsazure.com/en-us/support/understand-your-bi... which might hint at something.