It is clear why it is by 4. Perhaps you need to spell it out. It has something to do with avergaes. just like cooking a chook for 24 hours and by reducing the INPUT by 24 and expecting the same output as if a chook was cooked in 1 hour. It does not work. As for the 1 and times you ask I know why one should use that but again it is irrelevant to the OP.
I can tell you as FACT that NASA use the incoming energy hitting the SUN side of EARTH to make the following claim. For your benefit that is dividing by two!
A different approach on HOW the SUN can power our meterological events.
You guys HAVE it in your head that only CO2 can provide TWICE the energy the SUN can and thus it is CO2 that Drives the meterolgical cycles.
Pie in the sky stuff from fools.
As for your reference to tilt. Yes and? I see no particular reference to TILT and a DILUTED SUN. Tilt is irrellevant to forcing. You are off on a different tangent.
