PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/13-21:42:40
G02     68.6           26.6                8.5 +/-    1.53      16.1 +/-    1.53  0.090 / 0.280
G05     48.4           54.1                8.8 +/-    0.26      10.5 +/-    0.26  0.090 / 0.310
G12     182.2          19.1               12.6 +/-    2.03      28.3 +/-    2.03  0.070 / 0.100
G13     119.4          23.6               12.0 +/-    1.81      24.3 +/-    1.81  0.060 / 0.100
G15     158.3          21.3               13.9 +/-    2.04      29.6 +/-    2.04  0.090 / 0.200
G18     222.0          10.9               -5.1 +/-   21.29     -13.9 +/-   21.29  0.080 / 0.250
G20     217.5          75.4               12.1 +/-    1.29      12.5 +/-    1.29  0.030 / 0.040
G21     281.3          25.1               12.8 +/-    1.59      24.9 +/-    1.59  0.030 / 0.030
G25     216.2          39.7               13.3 +/-    1.33      19.4 +/-    1.33  0.040 / 0.050
G29     340.0          69.4               11.4 +/-    1.43      12.1 +/-    1.43  0.040 / 0.050