Auto-Compute Min/Max Values

Check this option to automatically stretch the color scheme's minimum and maximum data values to match the full range of observed values across all measurement sites within the current map view. This sets the lower and upper bounds for the category's legend and optimizes the use of colors each time the map zoom changes. Turn this feature off when you prefer to apply a set color scheme globally. You can also press "compute" below to optimize the colors as desired.

without auto-compute:

with auto-compute: