PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/27-01:27:40
G10     293.1          50.3                9.2 +/-    0.85      11.5 +/-    0.85  0.060 / 0.120
G15     47.2           33.4                5.8 +/-    0.69       9.5 +/-    0.69  0.050 / 0.110
G20     303.8          55.2                7.2 +/-    0.56       8.6 +/-    0.56  0.080 / 0.160
G21     82.5           76.5                9.0 +/-    1.15       9.3 +/-    1.15  0.060 / 0.130
G24     99.3           25.2                9.8 +/-    0.80      19.2 +/-    0.80  0.040 / 0.040
G27     303.7          32.7                8.1 +/-    1.55      13.5 +/-    1.55  0.040 / 0.050
G29     168.7          11.2               12.9 +/-    3.15      35.1 +/-    3.15  0.050 / 0.030
G32     209.0          30.8               11.5 +/-    3.18      19.8 +/-    3.18  0.060 / 0.040