PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/17-05:42:40
G03     190.9          20.4                5.7 +/-    0.56      12.4 +/-    0.56  0.030 / 0.070
G07     293.3          40.5                4.2 +/-    1.18       6.1 +/-    1.18  0.040 / 0.080
G08     142.8          28.2                5.3 +/-    1.04       9.7 +/-    1.04  0.040 / 0.080
G09     320.8          65.7                2.3 +/-    1.14       2.5 +/-    1.14  0.050 / 0.070
G16     42.8           35.5                2.3 +/-    1.16       3.6 +/-    1.16  0.030 / 0.040
G23     122.0          76.2                3.6 +/-    0.71       3.7 +/-    0.71  0.030 / 0.040
G27     98.1           34.0                5.6 +/-    1.30       9.0 +/-    1.30  0.030 / 0.040
G30     274.7          12.6                5.3 +/-    1.27      14.0 +/-    1.27  0.030 / 0.040