PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/28-19:28:10
G10     246.2          23.2               10.4 +/-    2.58      21.2 +/-    2.58  0.030 / 0.050
G13     58.5           32.3                8.0 +/-    1.20      13.3 +/-    1.20  0.040 / 0.040
G15     106.7          59.2                9.8 +/-    0.70      11.2 +/-    0.70  0.130 / 0.490
G16     300.5          15.6                7.0 +/-    2.33      17.1 +/-    2.33  0.200 / 0.480
G20     263.0          47.3               10.7 +/-    3.97      14.0 +/-    3.97  0.060 / 0.110
G21     328.1          56.7                9.6 +/-    0.65      11.3 +/-    0.65  0.060 / 0.130
G26     273.0          17.4                9.2 +/-    1.85      21.5 +/-    1.85  0.030 / 0.030
G29     163.0          56.4               11.9 +/-    0.60      13.9 +/-    0.60  0.030 / 0.030