Here is the numbers (kWh) -
Sunday: 113.4 -
Monday: 113.0
Tuesday: 112.8
Wed: 113.6
Thurs: 123,7 Cleaned in the morning. More high cirrus clouds in the afternoon then the prior days.
Temps did drop a bit, Thurs was 3F cooler then Wed, and Wed was 7F cooler than Tuesday. Sunday was the hottest day but skies were a tad clearer with minimal high cirrus clouds.
A tad under 9% (and 3F cooler temps). So I would say that is a worst case of fouling I would ever expect - ash from two large fires combined with about 4 months of dust/pollen/bird droppings/pine needles (minimal) and what looks like very small caked on spots of dried sap. Most of it came off from the simply spray, I'll look at it more closely this weekend in the early morning.
What this tells me is after this unusual ashy summer it was a good use of time to hose them off, and after future fires it may be worth the time to hit them once the air clears. Previously (prior to the broken water line) I was trying to hit them one or twice every two months but did not sweat it since we were in rainy season.
Sunday: 113.4 -
Monday: 113.0
Tuesday: 112.8
Wed: 113.6
Thurs: 123,7 Cleaned in the morning. More high cirrus clouds in the afternoon then the prior days.
Temps did drop a bit, Thurs was 3F cooler then Wed, and Wed was 7F cooler than Tuesday. Sunday was the hottest day but skies were a tad clearer with minimal high cirrus clouds.
A tad under 9% (and 3F cooler temps). So I would say that is a worst case of fouling I would ever expect - ash from two large fires combined with about 4 months of dust/pollen/bird droppings/pine needles (minimal) and what looks like very small caked on spots of dried sap. Most of it came off from the simply spray, I'll look at it more closely this weekend in the early morning.
What this tells me is after this unusual ashy summer it was a good use of time to hose them off, and after future fires it may be worth the time to hit them once the air clears. Previously (prior to the broken water line) I was trying to hit them one or twice every two months but did not sweat it since we were in rainy season.
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