Properties of observed isolated dwarf galaxies. From top to bottom: (1) Number of GCs in each galaxy, (2) projected galactocentric radius of each GC in each galaxy (R_GC) in the units of kiloparsecs, (3) same but in units of the scale lengths of the stellar disks of the galaxies (R_D, est) estimated from Eq. 1, (4) stellar mass of each GC (M_GC) in each galaxy, and (5) HI mass fraction in the total baryonic mass of each galaxy. The quantity on the horizontal axis is the total mass in stars and gas of each galaxy. The colors in the middle three tiles help distinguish between the GCs of different galaxies.