{"subjectId":"gauge-fr-h7742020","seriesUrlPattern":"/api/v1/series/{metricId}--{subjectId}.json","seriesCount":1,"observationCount":955,"series":[{"metricId":"river-flow-monthly-mean","subjectId":"gauge-fr-h7742020","unit":"m³/s","periodKind":"month","count":955,"from":"1948-02-01","to":"2026-09-01","sourceId":"fr-hubeau-hydrometrie"}]}