PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/07-19:43:00
G02     359.7          74.1               11.3 +/-    0.50      11.7 +/-    0.50  0.040 / 0.030
G05     164.0          40.1               14.2 +/-    0.58      20.6 +/-    0.58  0.040 / 0.030
G06     44.8           31.8               10.2 +/-    1.73      17.2 +/-    1.73  0.080 / 0.060
G12     277.9          79.4               13.5 +/-    0.65      13.7 +/-    0.65  0.060 / 0.070
G19     84.7           20.0               11.2 +/-    0.85      24.6 +/-    0.85  0.170 / 0.200
G24     223.0          16.9               12.8 +/-    2.60      30.4 +/-    2.60  0.170 / 0.290
G25     313.3          42.3               12.3 +/-    1.32      17.3 +/-    1.32  0.030 / 0.030
G29     293.9          16.0               10.9 +/-    1.74      26.4 +/-    1.74  0.020 / 0.040