swath: IW1
Bperp (average): -129.9274810915017
Bpar (average): 138.8659192268607
swath: IW2
Bperp (average): -119.33945900648675
Bpar (average): 148.1936189845073
swath: IW3
Bperp (average): -110.41179635601914
Bpar (average): 155.16991874502875