Thread on first few days with the Aranet4:

I don't always find the time to photograph the reading at its highest so luckily there is a Bluetooth connection to record readings in a graph for me. Opened the package from @CO2RadicalAus in car (yay), walked through staff room /1

1st road test in a small surgery room with about 3mx3mx3m space. Single window. Central aircon directly blowing air around. Unit placed near window. 2/

Had a medical appointment the next day. Large 4mx6mx3m waiting room, quiet morning. I sat there post vaccine for 10min observations. 3/

Don't underestimate the dogs when they come to wake you.. 3mx3mx3m room. 4/

Second surgery room test:
Small 2.5mx3mx3m room, no windows, split system aircon. Door open at the back towards another room. Quiet day. 5/

Got picked up in a car after work. Glad dad has put his Uber hobby days behind him. I had a mask on, but with readings like this having masks isn't enough 6/

3rd surgery room test, this one was a surprise because of the room size. No windows. Split system aircon. Large room 5mx5mx3m. 3 people. 7/

At work I run a small air purifier at all times during the day. (Pushes air through HEPA) However the rooms could do with increased air evacuation systems. Also note the rooms often lead to staff room, reception, waiting rooms...wrong air direction can blow particles to them. 8/

I haven't gone shopping with the unit yet. Only go grocery shopping once a fortnight. Will be interesting to see the shops when I dodge the isles with maskless shoppers and below-the-nose security guards.

Stay tuned. 9/9