Complex sentence: Q and U are defined as the linearly polarized intensities along the position angles 0 ° and 45 ° respectively;-Q and-U are along the position angles 90 ° and -45 °.
Split into simpler sentences: Q and U are defined as the linearly polarized intensities along the position angles 0 ° and 45 ° respectively. It is important to note that-Q and-U are along the position angles 90 ° and -45 °.