The display in this 26 second video indicates 6 Wm2 of relective UVA beneath a Beachshadow cover, the numbers in the display correspond to the following table:
0-15 UVA Weak, minimal and least harmful.
16-40 UVA Medium, fair skin might burn in 20 mins, cover exposed skin.
41-50 UVA Strong, high risk, fair skin burns in less than 10 mins, seek shade.
51+ UVA Very Strong, fair skin burns in less than 5 mins, avoid direct sunlight.
As the monitor is moved from beneath the Beachshadow cover, the display…. well see for yourself.