PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/06-06:57:30
G10     289.4          48.8                7.1 +/-    1.17       9.1 +/-    1.17  0.040 / 0.050
G15     47.3           32.8                4.1 +/-    0.62       6.8 +/-    0.62  0.040 / 0.060
G20     38.3           56.0                6.0 +/-    0.42       7.0 +/-    0.42  0.070 / 0.110
G21     74.4           76.8                8.2 +/-    0.46       8.4 +/-    0.46  0.070 / 0.110
G24     103.3          24.2                7.6 +/-    0.97      15.1 +/-    0.97  0.060 / 0.150
G27     305.6          31.9                6.2 +/-    1.67      10.4 +/-    1.67  0.070 / 0.120
G29     168.7          12.9                8.2 +/-    5.98      21.4 +/-    5.98  0.030 / 0.040
G32     208.2          28.2                9.6 +/-    1.36      17.4 +/-    1.36  0.040 / 0.050