15H Max.
          From: 2017/04/01 to 2017/07/31
            +---+---+---+---+---+---+---+
            |Mon|Tue|Wed|Thu|Fri|Sat|Sun|
          +-+---+---+---+---+---+---+---+
          |1|  1|  0| 15| 13| 13|  4|  2|
          +-+---+---+---+---+---+---+---+
          |2| 15|  5| 13| 14|  9|  1|  2|
          +-+---+---+---+---+---+---+---+
          |3| 15|  5| 15| 16| 14|  1|  2|
          +-+---+---+---+---+---+---+---+
          |4| 15|  4|  3| 15| 15|  1|  2|
          +-+---+---+---+---+---+---+---+
          |5| 12|  3|  1| 12| 15|  0|  0|
          +-+---+---+---+---+---+---+---+
          |6|  2|  1|  1|  7|  1|  0|  0|
          +-+---+---+---+---+---+---+---+