Shading type	Fitting coefficient		East	West	South
Adjustable horizontal shutters	Summer	a	0.56	0.57	―
Adjustable horizontal shutters	Summer	b	−1.30	−1.30	―
Fixed horizontal shield	a		―	―	0.5
Fixed horizontal shield	b		―	―	−0.8
Fixed vertical shield	a		―	―	0.33
Fixed vertical shield	b		―	―	−0.72