UV radiation levels inside a car vary depending on factors such as whether the side windows are open or closed and the orientation of the vehicle with respect to the sun. They are generally much lower than outside in full sunlight, varying from as low as 4% up to 50% of the ambient UV radiation outside the vehicle. Clear autoglass (side windows) blocks about 97% of the UVB radiation and about 37% of UVA radiation. Laminated windscreens block all of the UVB radiation and about 80% of the UVA radiation. Clear windscreen films can reduce the transmission of UVR further so that as much as 97% of the UVA is blocked. This depends on the quality of film used. Clear or tinted films can also reduce the amount of UVA and UVB penetrating through the side glass. The amount of protection varies with different products.