PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/14-13:58:10
G01     119.6          17.5                9.8 +/-    1.13      23.0 +/-    1.13  0.040 / 0.050
G07     79.0           66.9                9.2 +/-    0.85       9.9 +/-    0.85  0.030 / 0.050
G08     45.0           31.6                8.2 +/-    0.93      13.9 +/-    0.93  0.110 / 0.230
G09     176.0          25.2               10.3 +/-    1.04      20.1 +/-    1.04  0.120 / 0.250
G11     106.9          39.7                9.7 +/-    0.62      14.2 +/-    0.62  0.040 / 0.050
G13     317.9          19.1                8.8 +/-    1.49      19.8 +/-    1.49  0.040 / 0.070
G17     201.6          23.8                8.1 +/-    3.78      16.3 +/-    3.78  0.030 / 0.040
G18     94.6           20.6               10.1 +/-    0.85      22.0 +/-    0.85  0.020 / 0.050
G28     291.5          57.1                9.2 +/-    0.75      10.8 +/-    0.75  0.050 / 0.090
G30     344.2          67.6                7.7 +/-    1.03       8.3 +/-    1.03  0.050 / 0.100