I’m still having what might be winter issues. This got me thinking: how about gathering some winter experiences together with the latitude you spent winter at? Good, bad, neutral, whatever comes to mind. If it’s really the dark and cold winters causing a problem, we should see a strong relation, where the more extreme latitudes have more problems. In addition, we can use weatherspark.com to look at seasonal solar energy curves for everyone’s location. (You can find this as the last graph on a location’s report page.)
I’ll begin: I clearly have winter improvement issues, at 48°N, with a lowest solar power of 1 kWh/(d*m²) in December. (I’ve been in Munich for most of winter, and a bit further north for a few weeks.)
This section is being edited in as results show up. See the legend below for what the columns mean.
Lat Low DoC Source (Additional Info) ======================================================================== 60°N 0.2 - Panu 56°N 0.3 0 daniel 55°N 0.4 0 ? SickOfMyopia (new user, stagnant) 52°N 0.6 - Laurens 52°N 0.6 0 Emmy (presbyopia improvement?) 51°N 0.7 0 Conny 50°N 0.8 0 ducktalesfan 51°N 0.7 0 Tii_Chen 48°N 1.0 - eagle-eyes 48°N 1.0 - Varakari 47°N 0.9 0 nonanthebarbarian (Reddit) 47°N 1.1 0 gil.vegliach 47°N 1.3 0 Sandra 46°N 1.4 0 Sisatrom 45°N 1.5 + Franjo 44°N 1.3 + ? deibreik (new user, complicated backstory) 42°N 1.3 - Bhampson (very cold winter, rarely outside) 42°N 1.7 - (anonymous) 42°N 1.6 0 ? Bigkittyqueen (new user, stalled after initial drop) 41°N 1.7 0+? claire_szeto (less outdoor time in winter) 40°N 1.7 - Merlot3 (very cold winter, rarely outside) 40°N 1.7 + myst 34°N 2.9 + julia 33°N 2.9 0+ itamar
Low: Lowest daily average solar energy in kWh/(d*m²)
DoC: Estimated direction of spherical refractive change, where
+denotes myopia improvement,
-denotes myopia worsening, and 0+ denotes slowed progress.
Source: Who reported it
Question marks denote uncertainty, which can be from the data itself or from me being unsure how to best encode a given report.