PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/04-02:57:40
G10     290.4          49.3               11.3 +/-    2.78      14.4 +/-    2.78  0.070 / 0.110
G15     47.5           34.2                8.9 +/-    0.92      14.4 +/-    0.92  0.060 / 0.100
G20     323.2          62.9               11.6 +/-    0.66      12.8 +/-    0.66  0.040 / 0.030
G21     75.0           77.0               10.8 +/-    0.41      11.1 +/-    0.41  0.040 / 0.030
G24     101.6          24.4               10.8 +/-    1.49      21.3 +/-    1.49  0.150 / 0.200
G27     305.3          31.9               10.5 +/-    1.29      17.6 +/-    1.29  0.240 / 0.300
G29     168.8          12.8                9.9 +/-    1.33      26.0 +/-    1.33  0.040 / 0.070
G32     208.4          29.0               13.0 +/-    2.18      23.2 +/-    2.18  0.070 / 0.060