PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/11-18:57:30
G02     22.7           63.0                9.3 +/-    0.76      10.3 +/-    0.76  0.030 / 0.030
G05     149.9          55.5               13.8 +/-    0.49      16.4 +/-    0.49  0.040 / 0.030
G06     50.7           19.4                8.4 +/-    2.20      18.8 +/-    2.20  0.130 / 0.140
G12     197.9          72.7               12.8 +/-    0.32      13.4 +/-    0.32  0.190 / 0.100
G19     93.0           16.9               10.8 +/-    1.61      25.8 +/-    1.61  0.030 / 0.030
G25     305.2          49.1                9.6 +/-    2.54      12.2 +/-    2.54  0.040 / 0.030
G29     301.6          21.6               10.5 +/-    1.69      22.1 +/-    1.69  0.190 / 0.190