The only documentation I've found for the command 'vcgencmd get_throttled' is:
This returns a hex number in which the following bits may be set:
1: arm frequency capped
2: currently throttled
16: under-voltage has occurred
17: arm frequency capped has occurred
18: throttling has occurred
On a RPi 3B+ running 2018-10-09-raspbian-stretch-lite.img, I'm seeing the occasional 'throttled=0x80000' and 'throttled=0x80008'.
What do these bits represent?