PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-09:58:00
G10     299.6          52.4                5.2 +/-    0.78       6.4 +/-    0.78  0.130 / 0.460
G14     211.3          10.9               -1.2 +/-   18.99      -3.2 +/-   18.99  0.100 / 0.420
G15     45.7           25.5                3.6 +/-    0.61       7.0 +/-    0.61  0.060 / 0.110
G20     65.3           31.9                3.3 +/-    0.93       5.6 +/-    0.93  0.080 / 0.140
G21     103.2          72.2                5.1 +/-    0.57       5.3 +/-    0.57  0.040 / 0.040
G24     96.0           27.2                6.7 +/-    1.47      12.5 +/-    1.47  0.040 / 0.060
G27     297.6          35.4                6.2 +/-    1.50       9.8 +/-    1.50  0.070 / 0.080
G32     211.3          35.1                7.9 +/-    0.55      12.6 +/-    0.55  0.090 / 0.080