Measuring solar yield approaching winter solstice

I have amp envy!

The sun started peaking out behind the clouds right at the end of the solar day. Looks like it will come in at 9.x Ah with 95% of the day medium to heavy clouds. Watching the low angle sun behind thick clouds vs direct, I'd say with an hour to go before sunset that clouds cut half to two thirds of the amps vs direct sun at this angle.

I am thinking it would have come in around 8 Ah for the day with no sun and medium to heavy clouds.

Jim