Deciles - Rainfall
Deciles shown in the app allow you to see at a glance how your farm's rainfall is stacking against prior periods. In short it is a quick indicator if the period is wet, dry or in between relative to your own historical rain gauge records.
The deciles are shown in ranges 1 to 10 and the range number is indicated by the green colour in the decile gauge. If the green covers the second section of the gauge then it is read as decile range 2.
The monthly deciles shown in the app are cumulative. That is the decile shown in any month accommodates all rain that has fallen in prior months of the year being measured.
For example: From the picture below in April 2010 the decile observation is in range 2. That means, the rainfall for the year to April is in the lowest 20% of all the rainfall entered in the app for the same period (Jan to Apr). That is the season at Apr is considered dry.
In comparison, Jul 2013 the observation is in decile range 8. This states that the rainfall for the year to Jul is at least higher than 80% of any of the previous Jan-Jul periods in your app. That is the season at Jul is considered wet.
The annual decile situated above the rainfall graph on the app equates to the December decile reading.
Deciles - Actual Yield
Each year you record the average wheat yield. The deciles gauge compares your current year's average wheat yield (t/Ha) against all previous years recorded. At a glance the gauge allows you to see whether your yield is below average, average or above average.
For example: a deciles range of 1 indicates that your wheat yield is in the lowest 10% of all previous years. Whereas, a deciles range of 8, indicates that your wheat yield is in the highest 80% of all previous observations. A deciles range of 5 indicates your crop has yielded around your long term average.