On Thursday, 1 November 2018 15:32:24 UTC, Bernard Burton wrote:
Freddie,
You need to decide if it is the frost/dew that is causing the total, or if
it is condensation. At my station, plastic raingauges produce copious
amounts of condensation on days when the 5 inch copper gauge is dry both
inside and out. Also, a 0.2 mm TBR may give a tip and show 0.2 mm when much
less 'dew/frost' has been added to a nearly full bucket. Personally, I
disregard dew/frost in my rainfall returns unless there is evidence in the
5" gauge. It is also likely that most of the dew/frost that does occur is
evaporated (recycled) precipitation from the local area which will have
already been measured when it fell.
Thanks Bernard.
I believe it is all due to dew and/or frost, as there was no precipitation on the days in question, and the tips all occurred between 0700z-0900z. There is the possibility that some of the water contained in the bucket on some of the occasions was due to previous precipitation - but I noted that on all occasions there was either heavy dew or moderate frost deposits. My location is in the bottom of a steep-sided valley (the sides are 500-1000 feet above the valley floor) near a river, so is prone to cold still nights and consequent liquid deposits.
I will take your advice and disregard those tips that I'm certain are down to dew and/or frost.

--
Freddie
Ystrad
Rhondda
148m AMSL
http://www.hosiene.co.uk/weather/
https://twitter.com/YstradRhonddaWx for hourly reports (no wind measurement currently)
Stats for the month so far: https://www.hosiene.co.uk/weather/st...201810OCT.xlsx