DF distribution in different environments using NSA-Castignani catalogue (left) and Hyperleda catalogue (north hemisphere; right). Top panel: Distribution of DF values in Virgo-cluster region (orange), filamentary region (green), and low-density regions (blue). Additionally, we include the DF distribution of the filamentary region excluding galaxies belonging to groups (cyan) and vice versa, only including galaxies belonging to groups (lime). Bottom panels: Box plots of same distributions. We note that the box covers the first and third quartile of the data (e.g. between the 25th and 75th percentiles), while the line above it indicates the median value. The whiskers indicate the lowest and highest values still within 1.5 times the interquartile range, and the open dot symbols mark the outliers.