Boxplots of all individual SRT (dB SNR) measured in six test rooms per loudspeaker configuration. The boxplots show the medians (middle quartile), the inter-quartile range (IQR) between the first and third quartile (box length), the whiskers (1.5 times the IQR) and outliers (+). Significance bars indicate significant post-hoc differences between test rooms with Bonferroni correction. Corresponding p-values are listed in Table 2.