PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/08-17:12:30
G02     205.0          34.6               13.2 +/-    1.39      21.1 +/-    1.39  0.100 / 0.090
G06     153.6          72.4               12.5 +/-    1.00      13.0 +/-    1.00  0.070 / 0.110
G12     309.8          18.5               12.8 +/-    1.18      29.2 +/-    1.18  0.100 / 0.150
G17     41.4           44.7                9.3 +/-    0.72      12.6 +/-    0.72  0.120 / 0.170
G19     12.6           62.1               10.6 +/-    0.39      11.8 +/-    0.39  0.040 / 0.070
G24     296.5          38.5               13.5 +/-    0.73      20.2 +/-    0.73  0.030 / 0.060
G28     105.9          28.8               10.8 +/-    1.09      19.3 +/-    1.09  0.040 / 0.040