{
    "_meta": {
        "supplier": "Jäger Umwelt-Technik",
        "type": "Tube",
        "model": "JetFlex TD 65-2 G",
        "membrane": "EPDM",
        "tubeLength_mm": 1000,
        "totalLength_mm": 1062.5,
        "perforatedArea_m2": 0.18,
        "outerDiameter_mm": 65,
        "operating": {
            "continuousFlow_Nm3h": [2, 12],
            "maxOverloadFlow_Nm3h": 20,
            "operatingMode": "continuous-or-intermittent"
        },
        "stdAir": { "temp_C": 0, "pressure_mbar": 1013.25, "RH_pct": 0 },
        "coverageBasis": "bottom-coverage-pct",
        "coverageReference": null,
        "dataQuality": "point",
        "xAxisBasis": "per-element-Nm3h",
        "yAxisBasis": "ssotr-g-per-Nm3-per-m",
        "waterDepth_m": null,
        "source": "Jäger Umwelt-Technik 'JETFLEX TD 65-2 G Tube Diffuser' data sheet — vector chart on page 2 ('SSOTE and headloss for EPDM 1000 mm'). Curve coordinates recovered directly from the PDF vector paths on 2026-05-12 (bezier endpoints of the red SSOTE polyline and blue DWP polyline); axis calibration against the gridlines is exact.",
        "note": "Vendor sheet states neither the tank-floor coverage nor the water depth at which the SSOTE curve was measured. Treat as a single-coverage point estimate (key '0' = unspecified); do not extrapolate across density. SSOTR = SSOTE * 0.299 kg-O2/Nm3 (DIN-1343 dry air, 0 °C 1013.25 mbar)."
    },
    "ssote_curve": {
        "0": {
            "x": [2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12],
            "y": [8.20, 7.85, 7.57, 7.30, 7.10, 6.97, 6.85, 6.72, 6.60, 6.50, 6.40]
        }
    },
    "otr_curve": {
        "0": {
            "x": [2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12],
            "y": [24.52, 23.47, 22.63, 21.83, 21.23, 20.84, 20.48, 20.09, 19.73, 19.44, 19.14]
        }
    },
    "p_curve": {
        "0": {
            "x": [2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12],
            "y": [25.0, 27.5, 30.0, 32.5, 35.0, 37.5, 40.0, 42.0, 44.0, 46.0, 48.0]
        }
    }
}