def test_kt_kt_prime_factor(airmass_kt):
out = irradiance._kt_kt_prime_factor(airmass_kt)
expected = np.array([ 0.999971, 0.723088, 0.548811, 0.471068])
assert_allclose(out, expected, atol=1e-5)
def test_kt_kt_prime_factor(airmass_kt):
out = irradiance._kt_kt_prime_factor(airmass_kt)
expected = np.array([0.999971, 0.723088, 0.548811, 0.471068])
assert_allclose(out, expected, atol=1e-5)
