FX_IDC:USDGBP   米ドル/英ポンド
The dollar had been getting stronger since around March.
The dollar once went down but is getting stronger again.
It is easy to understand by using "USD/(other currency)" as the Y-axis.

The following is in Japanese.
3月頃よりドルが強くなってきていた。
ドルは一度下降したが再び強くなってきている。
"USD/(他の通貨)" をY軸にすると分かりやすい。