Thanks, handytech, for your answers. Another question arose concerning the VOC data (shown using the C program from https://github.com/alexh-name/bsec_bme680_linux and BSEC library): 2020-04-03 16:29:04,[IAQ (3)]: 38.57,[T degC]: 11.69,[H %rH]: 40.90,[P hPa]: 950.21,[G Ohms]: 1086249,[S]: 0,[eCO2 ppm]: 620.440551757812500,[bVOCe ppm]: 0.7882111072540283203125000
2020-04-03 16:29:07,[IAQ (3)]: 39.00,[T degC]: 11.70,[H %rH]: 41.06,[P hPa]: 950.19,[G Ohms]: 1082725,[S]: 0,[eCO2 ppm]: 624.260070800781250,[bVOCe ppm]: 0.7996708750724792480468750
2020-04-03 16:29:10,[IAQ (3)]: 39.44,[T degC]: 11.72,[H %rH]: 41.07,[P hPa]: 950.21,[G Ohms]: 1080097,[S]: 0,[eCO2 ppm]: 628.181396484375000,[bVOCe ppm]: 0.8116095066070556640625000
2020-04-03 16:29:13,[IAQ (3)]: 39.11,[T degC]: 11.72,[H %rH]: 41.03,[P hPa]: 950.17,[G Ohms]: 1089796,[S]: 0,[eCO2 ppm]: 625.240966796875000,[bVOCe ppm]: 0.8026405572891235351562500
2020-04-03 16:29:16,[IAQ (3)]: 38.94,[T degC]: 11.75,[H %rH]: 40.85,[P hPa]: 950.23,[G Ohms]: 1088907,[S]: 0,[eCO2 ppm]: 623.730834960937500,[bVOCe ppm]: 0.7980731725692749023437500
2020-04-03 16:29:19,[IAQ (3)]: 39.21,[T degC]: 11.79,[H %rH]: 40.73,[P hPa]: 950.25,[G Ohms]: 1082725,[S]: 0,[eCO2 ppm]: 626.131042480468750,[bVOCe ppm]: 0.8053450584411621093750000
2020-04-03 16:29:22,[IAQ (3)]: 39.79,[T degC]: 11.77,[H %rH]: 40.85,[P hPa]: 950.23,[G Ohms]: 1076613,[S]: 0,[eCO2 ppm]: 631.281250000000000,[bVOCe ppm]: 0.8211731314659118652343750
2020-04-03 16:29:25,[IAQ (3)]: 39.76,[T degC]: 11.80,[H %rH]: 40.87,[P hPa]: 950.23,[G Ohms]: 1082725,[S]: 0,[eCO2 ppm]: 630.964599609375000,[bVOCe ppm]: 0.8201911449432373046875000 First of all, what is meant with "bVOCe" ? Is it similar to other sensors TVOC (Total Volatile Organic Compounds)? In the source code I can find this description: * param[in] breath_voc_equivalent breath VOC concentration estimate [ppm] But I'm not quite sure how to interpret this. For comparison with TVOC, the typical PPM ranges are: 0.12 - 0.20 ppm = Good 0.20 - 0.30 ppm = Moderate 0.30 - 0.60 ppm = Unhealthy 0.60 - 2.00 ppm = Very unhealthy > 2.00 ppm = Hazardous According to the readings from my BME680 sensor this would mean the air is currently Very Unhealthy (~ 0.8 ppm). That's really not the case right now ;-). Am I misinterpreting the VOC data or is the sensor giving wrong data?
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