Understanding weather station histogram

big_mortgage

Hi All

I have this weather station. There is a trend indicator for the indoor temperature and humidity. (you can click the picture on argos for a larger picture).

It seems that this histogram is just a pretty way of displaying the temp and humidity but the instructions say:

• The trend of the indoor temperature and humidity is displayed on the screen in the form of a histogram
• The display has a cycle of 15 seconds, every cell of about 0.5 seconds

There are 20 of these 'cells' which do indeed refresh every 15 seconds when the histogram goes blank and then illuminates: bottom cell, then next cell up etc, until it stops according to the temperature/ humidity.

Now if it was a trend indicator surely it should be easy to read, ie rising, same, or falling.

Maybe I am reading too much into this, but how can a 'cell' represent a unit of time if the reading is of temp/ humidity?

kwikbreaks

Is there any way that the width of the bars can change?

I've seen pressure trend shown as a refreshing series of bars of different height. Your display could possibly be that same idea turned on its side (assuming it fills from bottom to top then starts off again)

big_mortgage

No the width of the bars is fixed.

Yes it fills from bottom to top then starts over.

kwikbreaks

In that case it's a mystery to me too