The fraction of the covered full annulus set by the inner and outer radii r_in and r_out
...
arcmin arcmin
A1795
A2029
A2052
A2199
A262
A3112
A3571
A85
Coma
HydraA
A1795 1.5 2.7
A2029 1.5 2.5
A2052 1.7 2.5
A2199 2.0 2.9
A262 1.6 2.7
A3112 1.5 2.9
A3571 0.0 2.1
A85 1.5 3.0
Coma 1.0 5.0
HydraA 1.5 2.7
MKW3S 1.5 2.5MKW3S