PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/31-00:13:10
G07     315.9          51.6                5.3 +/-    1.13       6.6 +/-    1.13  0.050 / 0.070
G08     117.8          44.8                7.8 +/-    0.86      10.6 +/-    0.86  0.050 / 0.050
G09     262.3          83.9                6.1 +/-    0.66       6.1 +/-    0.66  0.250 / 0.590
G16     42.8           20.9                2.9 +/-    2.30       6.3 +/-    2.30  0.320 / 0.410
G23     149.2          60.4                9.0 +/-    0.75      10.2 +/-    0.75  0.080 / 0.300
G27     75.7           38.2                4.9 +/-    0.72       7.4 +/-    0.72  0.080 / 0.210
G28     226.6          14.8                7.9 +/-    8.13      19.8 +/-    8.13  0.040 / 0.080
G30     289.4          24.4                6.0 +/-    1.35      12.0 +/-    1.35  0.050 / 0.060