13H Max.
          From: 2017/04/01 to 2017/07/31
            +---+---+---+---+---+---+---+
            |Mon|Tue|Wed|Thu|Fri|Sat|Sun|
          +-+---+---+---+---+---+---+---+
          |1|  1|  0| 12|  1|  2|  2|  0|
          +-+---+---+---+---+---+---+---+
          |2|  0|  0| 11|  8|  0|  1|  0|
          +-+---+---+---+---+---+---+---+
          |3| 12|  0| 14| 15|  9|  0|  0|
          +-+---+---+---+---+---+---+---+
          |4| 15|  0|  0| 10| 15|  0|  0|
          +-+---+---+---+---+---+---+---+
          |5|  0|  0|  0|  2| 15|  0|  0|
          +-+---+---+---+---+---+---+---+
          |6|  0|  0|  0|  0|  0|  0|  0|
          +-+---+---+---+---+---+---+---+