16H Max.
          From: 2018/04/01 to 2018/07/31
            +---+---+---+---+---+---+---+
            |Mon|Tue|Wed|Thu|Fri|Sat|Sun|
          +-+---+---+---+---+---+---+---+
          |1|  3|  0| 15| 14| 14|  0|  1|
          +-+---+---+---+---+---+---+---+
          |2| 13|  1| 13| 12|  2|  1|  1|
          +-+---+---+---+---+---+---+---+
          |3| 15|  4| 13| 16| 14|  0|  1|
          +-+---+---+---+---+---+---+---+
          |4| 15|  7|  5| 15| 14|  0|  1|
          +-+---+---+---+---+---+---+---+
          |5|  1|  1|  6| 13| 14|  0|  0|
          +-+---+---+---+---+---+---+---+
          |6|  1|  0|  9|  8| 12|  0|  0|
          +-+---+---+---+---+---+---+---+