swath: IW1
Bperp (average): -138.7135078920984
Bpar (average): 131.98485764670934
swath: IW2
Bperp (average): -127.79086363963462
Bpar (average): 142.58312220386304
swath: IW3
Bperp (average): -118.03049212245092
Bpar (average): 150.7672064840224