17H Max.
          From: 2019/04/01 to 2019/07/31
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            |Mon|Tue|Wed|Thu|Fri|Sat|Sun|
          +-+---+---+---+---+---+---+---+
          |1| 12|  0| 15|  9| 13|  0|  1|
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          |2| 11|  2| 14| 14| 12|  1|  1|
          +-+---+---+---+---+---+---+---+
          |3| 15|  7| 14| 15| 15|  0|  1|
          +-+---+---+---+---+---+---+---+
          |4| 15|  6|  3| 15| 15|  0|  1|
          +-+---+---+---+---+---+---+---+
          |5|  2|  5|  2| 14| 15|  0|  0|
          +-+---+---+---+---+---+---+---+
          |6|  1|  2|  3| 10|  4|  0|  0|
          +-+---+---+---+---+---+---+---+