Generating Charts "inline" in the HTML page (using Data URIs):
(this page requires one single HTTP request to serve all the base64-encoded pictures below)
Chart #1:

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Chart #9:

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Chart #20:

This (36.67 KB) page is served with one single HTTP request: the charts are generated on-the-fly and embedded into the HTML code by using the base64 encoding (look at the HTML source code).