Here is another image - shot in a cloudy day with barely visible shadows calling for 2 stops more light than bright sunshine at 7500 feet in Wyoming.

EXIF->
f5.6
ISO 400
1/1000th

Sunny 16 -> (suggests two stops more light than sunshine)
f8
1/400th
ISO 400

OR

f5.6
1/800th

Again - pretty close!!

Here is another image - shot in a cloudy day with barely visible shadows calling for 2 stops more light than bright sunshine at 7500 feet in Wyoming.

EXIF->
f5.6
ISO 400
1/1000th

Sunny 16 -> (suggests two stops more light than sunshine)
f8
1/400th
ISO 400

OR

f5.6
1/800th

Again - pretty close!!