PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/11-04:43:10
G01     118.9          18.0                6.1 +/-    1.65      14.0 +/-    1.65  0.040 / 0.060
G07     81.7           65.9                4.3 +/-    0.37       4.6 +/-    0.37  0.050 / 0.050
G08     44.9           31.1                2.9 +/-    1.03       4.9 +/-    1.03  0.040 / 0.100
G09     177.3          26.3                5.3 +/-    1.15      10.0 +/-    1.15  0.050 / 0.060
G11     107.2          39.4                5.3 +/-    0.69       7.8 +/-    0.69  0.110 / 0.170
G13     318.3          18.3                3.9 +/-    3.01       9.0 +/-    3.01  0.150 / 0.180
G17     201.5          25.7                7.2 +/-    1.68      13.9 +/-    1.68  0.120 / 0.170
G28     294.3          57.8                4.8 +/-    1.06       5.6 +/-    1.06  0.120 / 0.130
G30     350.8          69.6                3.8 +/-    0.88       4.0 +/-    0.88  0.020 / 0.030