Importing From an Aranet4 Monitor

The Aranet4 measures carbon dioxide, temperature, relative humidity, and air pressure. It keeps a limited history in its own memory, and the Aranet Home app on your phone reads that history over Bluetooth and can export it as a CSV file, which Kaizora imports.

Before You Export

• Sync first. Open Aranet Home near the monitor so it reads the latest history. Turning on Background data read in the app’s settings lets it keep reading while the app is in the background.
• Export regularly. The monitor’s memory holds from a few days to a few weeks of readings, depending on its measurement interval: the shorter the interval, the shorter the history. Older readings are overwritten.
• Leave the interval alone. Changing the measurement interval restructures what’s stored, and the monitor has no clock, only a timer: the app works out each reading’s time from the current interval, so history read after a change can get the wrong times. Export before changing it.
• Keep the batteries in. Removing them erases the monitor’s history.

Export From the Aranet Home App

The steps are the same on iPhone and Android:

1. Open Aranet Home and tap your Aranet4.
2. Open its history chart: tap the chart icon or one of its readings.
3. Tap the share or export icon at the top of the chart.
4. Choose the period you want, and CSV as the format, not XLSX: Kaizora reads only CSV.
5. Save the file (Save to Files on an iPhone) or send it to the device you’ll import on.

One file is one monitor. The file has a time column, whose header names its date order (such as Time(dd/mm/yyyy)), and a column per reading, each with its unit.

Import It

1. Open Data Sources, from the account menu at the bottom of the sidebar.
2. Under Imports, find Aranet4 Export and choose Import from file.
3. Under File, choose the CSV file.
4. Check the Time Zone. The file’s times have no time zone, so they’re read in the zone you choose, yours by default: choose the one the monitor was in.
5. Under Device, give the monitor’s name, or pick one you’ve imported from before. The file doesn’t say which device it came from, so this name is its device on your Devices page. Give the same Aranet4 the same name each time, and two Aranet4s different names.
6. Under Where the Device Was, search for one of your places or an address, use your current position, or enter coordinates.
7. Select Import.

What Comes In

Each line becomes one air quality reading on your Air Quality page, at the position you gave, with whichever of these the file has: CO₂ concentration, air temperature, relative humidity, air pressure, and radon. Units are read from the file’s headers, so Fahrenheit or inches of mercury are converted. A reading outside what its metric allows is skipped, and counted on the import.

An Aranet4 That Moved

A file has one position for all its lines. If you moved the Aranet4 during the period, export each stretch on its own and import each one with the place it was.

The Air You Breathe

Its readings describe the air at a place. Kaizora turns them into your exposure using your location history: wherever you were, the newest reading within 100 m in the hour before counts as the CO₂ (or temperature, or humidity) around you. Without a location history, the readings still show on the Air Quality page, but you have no exposure values. See Importing Google Maps Timeline, or track your location, and Read the Air Quality Page and Your Exposure.

To flag high CO₂, add a reference range to CO₂ Concentration.

If Something Goes Wrong

• The file is refused: check it’s a CSV from Aranet Home, not an XLSX, and that it hasn’t been opened and saved again in a spreadsheet app, which can change its dates and headers.
• Readings are at the wrong hour: on Data Sources, choose Delete data in Aranet4 Export’s … menu, then import its files again with the right time zone.
• Gaps or odd times: the interval was probably changed, or the batteries removed, before the history was read. Readings already lost from the monitor can’t be recovered.