PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/26-05:42:40
G05     50.3           12.8                0.2 +/-    0.95       0.6 +/-    0.95  0.100 / 0.220
G10     238.3          14.5                7.2 +/-    3.99      18.2 +/-    3.99  0.090 / 0.260
G13     72.0           36.3                4.9 +/-    0.55       7.5 +/-    0.55  0.080 / 0.140
G15     117.9          54.2                6.4 +/-    0.70       7.7 +/-    0.70  0.090 / 0.150
G16     311.0          13.6                3.7 +/-    2.09       9.6 +/-    2.09  0.050 / 0.050
G20     279.6          70.2                6.1 +/-    0.61       6.4 +/-    0.61  0.040 / 0.040
G21     316.1          49.1                4.3 +/-    0.39       5.5 +/-    0.39  0.320 / 0.310
G26     282.9          20.4                4.7 +/-    1.47      10.3 +/-    1.47  0.140 / 0.250
G29     158.3          69.0                6.1 +/-    1.41       6.5 +/-    1.41  0.040 / 0.060