PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/12-04:28:00
G07     351.8          63.7                5.7 +/-    0.35       6.3 +/-    0.35  0.040 / 0.030
G08     78.7           50.9                6.5 +/-    0.44       8.1 +/-    0.44  0.040 / 0.040
G09     177.4          59.9                7.5 +/-    0.73       8.6 +/-    0.73  0.090 / 0.140
G11     138.0          20.0                7.1 +/-    1.69      15.6 +/-    1.69  0.060 / 0.150
G23     159.0          34.0                6.8 +/-    1.29      11.0 +/-    1.29  0.060 / 0.090
G27     48.6           27.8                4.0 +/-    1.93       7.3 +/-    1.93  0.060 / 0.080
G28     244.6          35.2                6.1 +/-    1.84       9.7 +/-    1.84  0.050 / 0.030
G30     308.4          40.1                3.9 +/-    1.64       5.6 +/-    1.64  0.060 / 0.030