Artifacts Submitted by Week Since Call

 -1  1     10  0
  0  3     11  1
  1  0     12  8
  2  0     13  3
  3  0     14  2
  4  0     15 16
  5  1     16  0
  6  0     17  3
  7  0     18  2
  8  1     19  2