PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/11-19:58:00
G02     23.7           62.8               11.1 +/-    0.92      12.3 +/-    0.92  0.040 / 0.050
G05     155.0          54.4               14.4 +/-    0.53      17.2 +/-    0.53  0.050 / 0.040
G06     51.0           20.3                9.4 +/-    2.93      20.4 +/-    2.93  0.030 / 0.030
G12     207.8          73.4               10.9 +/-    0.31      11.3 +/-    0.31  0.030 / 0.030
G19     96.3           11.7               12.9 +/-    2.42      34.7 +/-    2.42  0.070 / 0.060
G20     197.3          21.5               16.3 +/-    2.01      34.6 +/-    2.01  0.060 / 0.050
G25     300.7          53.8               10.5 +/-    1.71      12.7 +/-    1.71  0.030 / 0.040
G29     304.2          25.5               11.3 +/-    1.54      21.8 +/-    1.54  0.030 / 0.040