2. Exposure to weather and daylight

2.1 Exposure conditions

The information obtained from the test described in this standard can obviously not be transposed unchanged to a given application, since, on the one hand, local conditions have a very strong influence on the results and, on the other hand, different test periods lead to different levels of stress (temperature, humidity, rain, sunshine, etc.).

However, despite these difficulties, this type of test is of great interest, and it seemed essential to precisely define as...