First three non-vanishing components of the SH representation of the $\pi^+\pi^+$ correlation functions for three multiplicity and $k_{\rm T}$ combinations, $l=0$, $m=0$ (top), $l=2$, $m=0$ (middle), and $l=2$, $m=2$ (bottom). The lines show the corresponding components of the Gaussian (GGG) fit.