Understanding the "fuel gauge" visualization

IP3 ASSESS uses a z-score approach to scoring individual indicators and data across domains—the “fuel gauge” visualizations used throughout the platform depict z-scores relative to the selected benchmark. This approach allows an "apples to apples" comparison of data from a variety of sources and with a variety of units and collection methods. 

The fuel gauges show up bright red if an indicator or domain scores significantly worse than the benchmark, light red or light green if the data are not significantly different from the benchmark, and bright green if the data are significantly better than the benchmark. See the note below on colorblindness. 

In this way, users quickly get a clear idea of how an area performs for a specific data indicator or across a domain compared to a benchmark, simplifying the interpretation of data across the platform. (Learn more about the scoring methodology here.) 

*A note on colorblindness: We endeavored to select color shades and saturations that could be differentiated by those with colorblindness. However, we recognize that for many, red and green are difficult to discern. The boxes themselves are another way to interpret the results: 

A box fully shaded to the left of the centerline represents a significantly worse score (i.e., greater than 1 standard deviation) than the benchmark score. 
When the box to the left of the centerline is partially shaded, it means the z-score is worse than the benchmark but not a full standard deviation. 

A box fully shaded to the right of the centerline represents a significantly better score (i.e., greater than 1 standard deviation) than the benchmark score. 
When the box to the right of the centerline is partially shaded, it means the z-score is better than the benchmark but not a full standard deviation.