PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/15-15:13:10
G02     68.8           24.6                9.3 +/-    2.32      18.3 +/-    2.32  0.040 / 0.040
G05     48.8           53.0                8.9 +/-    0.85      10.8 +/-    0.85  0.040 / 0.030
G12     183.9          22.7               12.5 +/-    1.48      25.7 +/-    1.48  0.040 / 0.030
G13     120.9          22.3               13.5 +/-    1.32      28.2 +/-    1.32  0.040 / 0.030
G15     157.0          21.1               15.4 +/-    2.39      33.0 +/-    2.39  0.100 / 0.130
G18     221.2          11.3               -2.1 +/-   19.58      -5.7 +/-   19.58  0.110 / 0.120
G20     217.0          70.2               11.1 +/-    0.46      11.7 +/-    0.46  0.110 / 0.090
G25     222.6          43.0               11.8 +/-    2.01      16.3 +/-    2.01  0.110 / 0.070
G29     344.0          70.4                7.5 +/-    0.48       7.9 +/-    0.48  0.060 / 0.180