We are analyzing that right now from the survey. It looks like reported mosquito severity is much lower with trailhead entries starting about July 15 in the low snowpack years.
Later, of course, in the high snowpack years. Also start later in high snowpack years.
For the gradually growing reports of year-to-year problem correlations see this FB album or Drive folder. We will add entry-date seasonal comparisons soon to the same album and drive folder
Also found in this shared Google Drive album
Go to
Open folder #6
Open folder Multi-year reports
I've had a lot of volunteers from one of the FB groups to take on survey-related or drive-maintenance tasks. I was surprised and pleased to get a number of people who have taken on specialized tasks that I don't know how to do and people willing to do relatively boring stuff that relieves my load so I can focus on the survey
What I still need is
Someone with experience in drawing non-linear trend lines in scattergraphs that conform to the data rather than to any particular standard math pattern (e.g., I don't know that any of my findings are exponential). The effects of pack weight on daily mileage are very non-linear and age-related problems are presumably also non-linear with problems decreasing up to at least age 55 or 60 and perhaps increasing after that (age 70 in my personal experience)
Someone who could develop predictive models (presented as online calculators) that would use survey data to give an estimate of something like expected daily mileage given relevant factors like age, pack weight, pre-hike exercise, body mass index.
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John Curran Ladd
1616 Castro Street
San Francisco, CA? 94114-3707
415-648-9279
John Ladd