The bubbles
Bubble 1 People were told to wear a mask all the time. They could decide for themselves where to stand, but had to ensure that there were no more than three people in a square metre of space.
Bubble 2 People wore a mask all the time and were told to keep a distance of 1.5 metres.
Bubble 3 People wore a mouth mask only when in motion and had to stand on designated spots.
Bubble 4 People wore masks all the time. There were seats available.
Bubble 5 People only masks only when on the move. There were standing and seating areas. The participants were put in their dancing spot by the organisers with two chairs spacing people apart.
Bubble 6 No masks. People were allowed to stand or sit where and when they pleased.
One group was given a fluorescent drink & encouraged to sing and scream to the music in order to examine how much saliva was released at moments of peak revelry.
