PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/29-08:42:50
G07     359.9          65.5                4.6 +/-    0.75       5.0 +/-    0.75  0.040 / 0.040
G08     83.0           53.8                5.1 +/-    0.98       6.1 +/-    0.98  0.030 / 0.040
G09     181.3          60.2                7.0 +/-    0.45       7.9 +/-    0.45  0.080 / 0.180
G11     138.4          21.9                2.9 +/-    1.57       6.1 +/-    1.57  0.130 / 0.160
G23     157.9          26.9                3.6 +/-    1.35       6.8 +/-    1.35  0.040 / 0.040
G27     45.7           24.5                4.3 +/-    1.51       8.5 +/-    1.51  0.040 / 0.030
G28     245.0          32.5                5.1 +/-    1.98       8.4 +/-    1.98  0.050 / 0.040
G30     311.3          43.1                4.1 +/-    0.91       5.7 +/-    0.91  0.030 / 0.040