Ambient Temperature
Supported in Android.
Measures the ambient room temperature in degrees Celsius.
Each ambient temperature record includes the following:
Temperature:
Ambient air temperature. Internally stored as temp_c.
Accuracy:
Same as Accuracy in Accelerometer.
Light
Supported in Android.
Measures the ambient light level (illumination) in (lx).
Each light record includes the following:
Illuminance:
Illuminance, in lx. Internally stored as illuminance_lx.
Accuracy:
Same as Accuracy in Accelerometer.
Pressure
Supported on Android & iOS.
Measures the ambient air pressure in hectopascals (hPa) or millibars (mbar). Usually used for monitoring air pressure changes.
Each pressure record includes the following:
Pressure:
Ambient air pressure, in hPa or mbar. Internally stored as pressure_hpa.
Accuracy:
Same as Accuracy in Accelerometer.
Proximity
Supported on Android.
Measures the proximity of an object in centimeters (cm) relative to the view screen of a device. Typically is used to determine whether a handset is being held up to a person’s ear.
Each proximity record includes the following:
Distance:
Distance from an object, in centimeters. Internally stored as dist_cm.
Accuracy:
Same as Accuracy in Accelerometer.
Relative Humidity
Supported on Android.
Measures the relative ambient humidity in percent (%).
Each relative humidity record includes the following:
Humidity:
Ambient relative humidity, in percent. Internally stored as humidity_percent.
Accuracy:
Same as Accuracy in Accelerometer.
Use Cases
In the Real-time Well-Being Measures Study, conducted using the Avicenna platform, you can see how some of the above data sources were applied. Visit our Use Cases page to explore more studies.