Soil Moisture/Temperature probe data

We installed a AquaCheck soil probe a while ago, the above screenshot shows the 10cm deep soil temperature (red line), as you can see the soil temp rises and falls each day, the highest daytime 10cm deep soil temp was 32 deg C, this surprised me as it was about the same as the ambient temperature (air temp).
Then we had 34 mm of rain around the 2nd of April, as the graph shows, the temperature plummeted by 8 to 10 deg C.
 I suspect that the radical drop is also related to the Mungbean crop getting canopy cover (shading the ground).
Lots for us to learn from all this type information, the hope would be that we make better management choices based on what we learn.