Table \[table:sample\], where the Galactic absorption, $A(B)_{\rm Gal}$, is taken from the NED database, and other parameters are taken from the LEDA database. The morphological type of a galaxy is shown in column (2), the apparent and absolute magnitudes are given in columns (3) and (4), the inclination and position angles are listed in columns (5) and (6), and the isophotal radii in arcmin and kpc are presented in columns (7) and (8). The adopted distances are given in column (9). The Galactic absorption and the dust absorption due to the inclination of a galaxy are presented in columns (10) and (11). The adopted value of the Hubble constant is equal to H$_0 = 75$ kms$^{-1}$Mpc$^{-1}$.

Fig. \[figure:col\_dist\] shows dependences between the $U-B$ colour indexof star clusters and the linear separation of SC-H[ii]{}R pairs for five studied galaxies. Here we excluded star clusters in close SC-H[ii]{}R pairs with undefined absorption ($S<40$ pc, green dots in Fig. \[figure:col\_dist\]) and clusters with large measured photometric errors ($\Delta U>0.3$ mag and/or $\Delta B>0.3$ mag). The remaining star clusters have no H$\alpha$ emission and therefore they are older than 10 Myr. As seen from the figure, a correlation between $U-B$ and separation is observed 