time cens treat
   1   1  1
   1   1  1
   2   1  1
   2   1  1
   3   1  1
   4   1  1
   4   1  1
   5   1  1
   5   1  1
   8   1  1
   8   1  1
   8   1  1
   8   1  1
  11   1  1
  11   1  1
  12   1  1
  12   1  1
  15   1  1
  17   1  1
  22   1  1
  23   1  1
   6   1  2
   6   1  2
   6   1  2
   6   0  2
   7   1  2
   9   0  2
  10   1  2
  10   0  2
  11   0  2
  13   1  2
  16   1  2
  17   0  2
  19   0  2
  20   0  2
  22   1  2
  23   1  2
  25   0  2
  32   0  2
  32   0  2
  34   0  2
  35   0  2