7.3 Frequency Distribution of Diameters
Table 6 gives the distribution of major diameters of groups and clouds or clusters.
|17 clouds and clusters||6||5||3||1||2||2.5|
* Including Local Group.
Median and mean diameters are: groups, 1.5/1.5 Mpc (range 0.3-2.5); clouds and clusters, 2.3/2.5 Mpc (range 1.8-3.6). There is a suggestion of bimodal distributions: small groups (0.3-1.2 Mpc), large groups (1.4-2.5 Mpc); small clouds or clusters (1.8-2.5 Mpc), large clouds (2.8-3.6 Mpc).