swath: IW1
Bperp (average): 76.63294282802424
Bpar (average): -113.0486077442013
swath: IW2
Bperp (average): 67.41679691501784
Bpar (average): -118.69875042752048
swath: IW3
Bperp (average): 59.30508556996753
Bpar (average): -122.92496190675008