The Gauge data class includes the following graph types:
Gauges bear little resemblance to other graph types. They "graph" only one data value, which determines the color of the gauge.
Besides the value of a gauge, you can also specify a label for the gauge, and color ranges. Color ranges, which consists of a range name (e.g. Critical), a color value (e.g. #FF0000), and a maximum and minimum value, are used to determine the color of the gauge. If the data value falls between the maximum and minimum value of a range, the gauge will appear in that range's color. On some gauges you can also set a minimum and maximum value for the gauge itself.
Note: When you have overlapping ranges, the data value will be in the most recently created range. For example, if you have a green range from 80 to 130, and you have a red range of 93 to 110, a data value of 94 would be considered to be in the red range.