Being creatures of habit there are things that we obviously are drawn to and others we avoid. I can't tell you much about the 1-4pm time slot. I've never enjoyed the middle afternoon unless playing golf but just as a time of day - well not so much. 4-7am are, however, my best times.
My once upon a time home office had a view north and east. The ocean and marshlands were south and west respectively so unless the air conditioning is on, I can hear it. The marsh is filled with birds - and that is the predawn music. You can't see anything clearly at 4am except to know that the sun is on its way. Images float and dance, deer move as upright shadows and all seems right.