The weekly pivot chart for USD/JPY indicates that the pivot points are placed according to the maximums and minimums. This chart will enable to place Stop Take Profits or Stop Losses. These Pivot Levels are some sort of a trading map that will allow you to know beforehand the possible increases and declines of the pair.
Therefore, it is recommended to open short positions at the R1 level and long positions at the S1 level. If the weekly pivot is considered as target, it may turn to be a feasible strategy for swing trading. The strategy can be used in other way: it is possible to open long positions in S2 positions and short R2 weekly with S1 or R1 as seen weekly targets or to the pivot point.

____WEEKLY_____
Weekly - R3 = 80.84
Weekly - R2 = 80.46
Weekly - R1 = 80.19
Weekly Pivot = 79.81
Weekly - S1 = 79.54
Weekly - S2 = 79.16
Weekly - S3 = 78.89

____MONTHLY______
Monthly - R3 = 85.74
Monthly - R2 = 84.51
Monthly - R1 = 82.18
Monthly Pivot = 80.95
Monthly - S1 = 78.62
Monthly - S2 = 77.39
Monthly - S3 = 75.06