{"subjectId":"gauge-fr-o1484320","seriesUrlPattern":"/api/v1/series/{metricId}--{subjectId}.json","seriesCount":1,"observationCount":1001,"series":[{"metricId":"river-flow-monthly-mean","subjectId":"gauge-fr-o1484320","unit":"m³/s","periodKind":"month","count":1001,"from":"1921-12-01","to":"2026-09-01","sourceId":"fr-hubeau-hydrometrie"}]}