Sure Chas.

I've create a worked example from the numbers you reported (please ignore the minor rounding errors):

(reported) RPM $430
(reported) CTR 200%
(reported) RPC $0.22
(reported) Revenue $1.72
(calculated) Clicks (inferred) 7.8
(calculated) Visitors (inferred) 3.9
(calculated) RPM Check (recalculated) 440

To find out how much you understand the definitions you discovered yourself, tell me first to what extent the above makes sense to you and we'll take it from there.