PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/12-01:57:30
G07     331.7          57.8                3.0 +/-    0.57       3.5 +/-    0.57  0.030 / 0.050
G08     99.8           50.3                5.7 +/-    0.77       7.2 +/-    0.77  0.030 / 0.040
G09     187.9          75.2                5.3 +/-    1.15       5.5 +/-    1.15  0.040 / 0.060
G11     146.2          12.1                7.4 +/-    3.41      19.7 +/-    3.41  0.040 / 0.070
G16     45.9           10.3                2.7 +/-    1.89       7.5 +/-    1.89  0.040 / 0.070
G23     155.4          47.4                7.8 +/-    1.08      10.2 +/-    1.08  0.040 / 0.070
G27     60.5           34.9                3.6 +/-    0.80       5.8 +/-    0.80  0.120 / 0.490
G28     234.2          25.0                6.6 +/-    1.22      12.8 +/-    1.22  0.120 / 0.390
G30     298.6          31.8                3.4 +/-    1.69       5.8 +/-    1.69  0.090 / 0.120