{"subjectId":"gauge-fr-m5102010","seriesUrlPattern":"/api/v1/series/{metricId}--{subjectId}.json","seriesCount":1,"observationCount":727,"series":[{"metricId":"river-flow-monthly-mean","subjectId":"gauge-fr-m5102010","unit":"m³/s","periodKind":"month","count":727,"from":"1967-01-01","to":"2026-09-01","sourceId":"fr-hubeau-hydrometrie"}]}