aws cloudwatch get-metric-statistics \ --namespace "SampleNamespace" \ --metric-name "temperature" \ --start-time "2024-03-06T14:00:00+09:00" \ --end-time "2024-03-06T15:00:00+09:00" \ --period 60 \ --dimension Name=Service,Value=myapp \ --statistics Average Maximum --start-time, --end-time: 時刻範囲指定 --period: 何秒間隔でメトリクスを取得するか