Temperatures/times over the years

Knee Knacker runner Sean Lavin started doing some research related to weather on Race Day over the past dozen or so years. Here is the first chart he pro­duced in 2010, showing the max­i­mum tem­per­a­tures (Cel­sius) on Race Day:

In 2013, Pat Malaviarachchi took it a step or 2 fur­ther. He brought the tem­per­a­ture data up to date as of last year’s race (using race day temp at 2pm), and also over­laid it with the median fin­ish­ing times over the years. Here is what it looks like:

AvgTemps&MedianTimes

As noted by Pat — “There’s def­i­nitely a trend going on between tem­per­a­ture and median fin­ish­ing time, par­tic­u­larly in recent years (cor­re­la­tion coef­fi­cient is almost 0.7, which is pretty good)”.

Many thanks, Pat (and Sean too)!