PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/06-20:58:10
G10     246.2          23.1               11.9 +/-    2.71      24.3 +/-    2.71  0.140 / 0.420
G13     58.6           32.4                9.4 +/-    1.11      15.6 +/-    1.11  0.140 / 0.440
G15     108.2          59.3               12.1 +/-    0.54      13.8 +/-    0.54  0.080 / 0.120
G16     300.2          15.7                8.1 +/-    2.97      19.8 +/-    2.97  0.070 / 0.110
G20     262.9          47.2               11.6 +/-    4.06      15.1 +/-    4.06  0.040 / 0.050
G21     327.4          56.3               10.5 +/-    0.61      12.3 +/-    0.61  0.030 / 0.050
G26     272.5          17.5                9.4 +/-    1.43      22.1 +/-    1.43  0.030 / 0.030
G29     163.3          56.8               12.0 +/-    0.64      14.0 +/-    0.64  0.030 / 0.030