Left: $\sigma_{\rm long}^{2}$ as a function of the cluster energy. Data, pp collisions at $\sqrt{s}=$ 13 TeV triggered by the EMCal and DCal with L1-$\gamma$ at $8.5$ GeV, V2 clusterizer. Right: Number of cells in the cluster in the same T-Card as the highest energy cell as a function of the number of cells in a different T-Card, for clusters between 100 and 200 GeV.