Dilution factor: 1/15
   Galaxy  Galaxy  total
           seconds hours
 1 NGC7552  3291   0.9
 2 NGC6946  4707   2.2
 3 NGC1097  6012   3.9
 4 NGC5194  7420   6.0
 5 NGC4631  7420   8.0
 6 NGC4826 10036  10.8
 7 NGC4736 10036  13.6
 8 NGC1482 12318  17.0
 9 NGC5055 14166  20.9
10 NGC4536 15474  25.2
11 NGC7331 16446  29.8
12 NGC3627 17754  34.7
13 NGC3521 18186  39.8