Fig. 2
From: Modeling hourly weather-related road traffic variations for different vehicle types in Germany

Distributions of mean squared error skill scores (MSESS). The MSESS compares models with (MET) to models without (NO_MET) meteorological predictor variables, separated by vehicle and road type. Box and whisker plots indicate the variability of the MSESS between different traffic stations with the median (horizontal lines), interquartile range (thick vertical lines) and minimum and maximum values (thin vertical lines) of the distribution