PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/12-01:58:00
G07     331.7          57.8                4.3 +/-    0.63       5.0 +/-    0.63  0.120 / 0.280
G08     99.8           50.3                5.9 +/-    0.39       7.4 +/-    0.39  0.210 / 0.240
G09     187.9          75.2                6.6 +/-    0.47       6.8 +/-    0.47  0.160 / 0.400
G11     146.2          12.1                7.3 +/-    3.01      19.5 +/-    3.01  0.120 / 0.840
G16     45.9           10.3                2.6 +/-    5.15       7.2 +/-    5.15  0.140 / 0.120
G23     155.4          47.4                7.7 +/-    0.86      10.0 +/-    0.86  0.170 / 0.110
G27     60.5           34.9                5.6 +/-    0.92       9.0 +/-    0.92  0.060 / 0.050
G28     234.2          25.0                5.8 +/-    1.51      11.4 +/-    1.51  0.050 / 0.050
G30     298.6          31.8                4.2 +/-    2.31       7.1 +/-    2.31  0.040 / 0.040