swath: IW1
Bperp (average): -142.70709859957876
Bpar (average): 126.60483411261146
swath: IW2
Bperp (average): -132.28142257201446
Bpar (average): 137.70006465956604
swath: IW3
Bperp (average): -123.07428590622312
Bpar (average): 146.36594169505824