Ice cold water on hot panes is a recipe for an insurance claim against you for cracked glass.
Stand on a 12 to 20 foot folding ladder in front of the awning as the angle with be just about perfect. Zero degree Unger or the Moreman with the FLIQ on a pole. Have a window cleaning of bucket of soapy tap water on the ground to dunk the FliQ/Channel/Mop in and rinse repeat for all five of the panels.