"""
Difference between two bearings
"""

def  delta_bearing(b1 , b2):
	return ((b2-b1+540)%360)-180

dataSet = [[20, 45], [-45, 45], [-85, 90], [-95, 90], [-45, 125], [-45, 145], \
	[29.4803, -88.6381], [-78.3251, -159.036], \
	[-70099.74233810938, 29840.67437876723], \
	[-165313.6666297357, 33693.9894517456], \
	[1174.8380510598456, -154146.66490124757], \
	[60175.77306795546, 42213.07192354373]]

print('.{:-^19}.{:-^19}.{:-^9}.' .format(" b1 ", " b2 ", " Δ b " ))
for Δ in dataSet:
	print('|{: > 19}|{: > 19}|{: > 9.4f}|' .format(Δ[0], Δ[1],delta_bearing(Δ[0],Δ[1])))