On Sat, 02 Aug 2008 16:44:19 GMT, Paul Hyett wrote:

On Sat, 2 Aug 2008 at 10:53:41, Alan Gardiner
wrote in uk.sci.weather :

Chiswell Green, St Albans (51° 44'N, 0° 24'W, 101m AMSL) July 2008

Max Max: 29.8 C on the 27th (console shows 30 C but not captured by the
logger)

I've had that happen, too - which temperature should be recorded as the
maximum in such circumstances?

I suspect that the console reading is correct but the temperature was at
that level for such a short time that it was not transferred to the logger
memory. A rounding up or down error is a possibility as well.

It would be rather laborious to inspect all of the maximum and minimum
readings on the console against the logger readings so I use the logger
readings. I have noticed this effect before but in this case it did stand
out.

If John Dann reads this perhaps he could give provide an authoritative
reason for the discrepancy.



Alan Gardiner
Chiswell Green, St Albans
101m ASL
03/08/2008 10:05:32