PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/07-16:12:40
G01     40.5           14.9                8.0 +/-    1.02      19.9 +/-    1.02  0.150 / 0.270
G06     174.5          41.0               14.5 +/-    1.01      20.7 +/-    1.01  0.120 / 0.270
G13     238.3          21.2               13.6 +/-    1.74      29.1 +/-    1.74  0.030 / 0.040
G15     272.5          11.8               12.1 +/-    1.07      32.5 +/-    1.07  0.040 / 0.040
G17     10.7           67.5               12.4 +/-    0.97      13.3 +/-    0.97  0.190 / 0.260
G19     287.9          71.3               12.7 +/-    0.65      13.3 +/-    0.65  0.210 / 0.300
G24     316.9          19.0               10.4 +/-    2.11      23.5 +/-    2.11  0.060 / 0.130
G28     73.9           45.9               12.0 +/-    1.08      15.9 +/-    1.08  0.060 / 0.140
G30     155.4          28.1               12.3 +/-    1.81      22.5 +/-    1.81  0.070 / 0.220