Quantification of the LSS environment for the SIT. The morphological category for each triplet is depicted with different colours and symbols. Blue pentagons correspond to triplets where the three galaxies are spirals (TL), green crosses to triplets where the A galaxy is spiral (TCL), orange stars to triplets where the A galaxy is elliptical (TCE); and red triangles to triplets where the three galaxies on are ellipticals (TE), as indicated in the legend. The distribution and their mean values of the parameters Q_A, LSS and η_k, LSS for each morphological category is shown in the upper and right panel, respectively, following the same colour-coding.