Moving monthly Total Data / day

all values are listed as: MB

      time  |    bcast    bogey
------------+------------------
2009-12-26  |  106.705    0.000
2009-12-27  |  106.883    0.000
2009-12-28  |  106.159    0.000
2009-12-29  |  104.132    0.000
2009-12-30  |  107.498    0.000
2009-12-31  |  105.786    0.000
2010-01-01  |  106.026    0.000
2010-01-02  |  107.833    0.000
2010-01-03  |  110.761    0.000
2010-01-04  |  112.664    0.000
2010-01-05  |  113.745    0.000
2010-01-06  |  114.675    0.000
2010-01-07  |  114.056    0.000
2010-01-08  |  113.753    0.000
2010-01-09  |  114.539    0.000
2010-01-10  |  113.143    0.000
2010-01-11  |  112.983    0.000
2010-01-12  |  112.614    0.000
2010-01-13  |  112.316    0.000
2010-01-14  |  112.776    0.000
2010-01-15  |  113.571    0.000
2010-01-16  |  115.378    0.000
2010-01-17  |  115.589    0.000
2010-01-18  |  116.535    0.000
2010-01-19  |  118.400    0.000
2010-01-20  |  125.642    0.000
2010-01-21  |  131.246    0.000
2010-01-22  |  136.583    0.000
2010-01-23  |  142.481    0.000
2010-01-24  |  147.853    0.000
2010-01-25  |  153.699    0.000
2010-01-26  |  158.908    0.000