PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/24-17:57:50
G02     18.0           65.8                8.3 +/-    0.62       9.0 +/-    0.62  0.030 / 0.040
G05     153.4          52.3               10.0 +/-    0.72      12.3 +/-    0.72  0.030 / 0.040
G06     49.3           21.6                7.3 +/-    1.73      15.5 +/-    1.73  0.030 / 0.030
G12     202.0          75.6                8.1 +/-    0.40       8.3 +/-    0.40  0.030 / 0.030
G19     90.2           18.9                9.0 +/-    4.02      20.4 +/-    4.02  0.050 / 0.060
G25     308.0          46.9                8.6 +/-    1.26      11.2 +/-    1.26  0.060 / 0.080
G29     299.4          19.5                8.6 +/-    1.32      19.2 +/-    1.32  0.100 / 0.120