PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/07-12:42:50
G01     110.5          23.6                4.4 +/-    2.15       8.9 +/-    2.15  0.030 / 0.040
G07     101.0          60.8                5.5 +/-    1.15       6.2 +/-    1.15  0.040 / 0.040
G08     42.1           22.0                3.7 +/-    1.19       7.8 +/-    1.19  0.080 / 0.180
G09     174.1          15.0                5.4 +/-    1.43      13.4 +/-    1.43  0.080 / 0.190
G11     92.6           42.2                5.8 +/-    0.51       8.1 +/-    0.51  0.040 / 0.050
G13     312.1          26.5                5.2 +/-    0.93       9.8 +/-    0.93  0.040 / 0.060
G17     204.1          35.1                6.7 +/-    1.32      10.6 +/-    1.32  0.030 / 0.040
G18     83.7           23.5                3.7 +/-    1.03       7.5 +/-    1.03  0.030 / 0.040
G28     310.3          60.2                5.2 +/-    1.01       5.9 +/-    1.01  0.040 / 0.080
G30     4.0            75.3                4.9 +/-    0.35       5.0 +/-    0.35  0.040 / 0.080