Voltage graphing range changed

[smartb]

For some reason the voltage range on my graphing changed from within ~2.5 volts of operating voltage to the range of 0-30 volts so smaller changes can't be seen. How is this adjusted or why did it change?

[Stephen]

The range is automatically selected based on the input values. If the range has adjusted that much it must mean that an input value was low or high enough to merit the graph adjusting to this range. Check the 1hr and 24hr graphs to see if there was a drop or a rise that might account for the change.