This site and content, unless stated otherwise, was created by Shane White, B. Eng. Electronic, and can be used for only educational and non-profit purposes. I do not receive any benefits from this site, nor do I have any affiliations with any business of any form.

The content used is from only widely cited organisations and available for free.

My own charts are created using Apple Numbers 5.

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To the best of my knowledge, visits to this website are not counted or tracked.