England has been flooded recently. The waters have been receding rather slowly.
My regular calibration course has a large puddle caused by water collected in the adjacent field,
so for Sunday's measurement in Reading, I laid out a nice new dry calibration course conveniently located by the course.
Then, between 7k & 8k into the 10k measurement I was unexpectedly faced with 200m of water in places up to at least 1 foot deep
- maybe even deeper to judge from the tide mark on my trousers.
My question is does anyone have figures on the change of constant when the course is under water?
I will be able to get data when I go back and remeasure in dry conditions between my 7k and 8k reference points which were accurately recorded.
Thanks to the race director for this picture of my progress through the flood. I have theories about the possible constant change, but does anyone have data?