PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-04:43:00
G10     242.5          19.2                7.9 +/-    2.04      17.7 +/-    2.04  0.100 / 0.370
G13     64.4           34.7                6.7 +/-    0.94      10.7 +/-    0.94  0.090 / 0.330
G15     107.3          56.8                8.0 +/-    0.52       9.4 +/-    0.52  0.040 / 0.060
G16     305.0          15.1                4.3 +/-    2.18      10.7 +/-    2.18  0.050 / 0.040
G20     276.3          64.7                7.4 +/-    0.51       8.1 +/-    0.51  0.070 / 0.100
G21     321.9          52.9                6.6 +/-    0.63       8.1 +/-    0.63  0.060 / 0.110
G26     276.4          19.1                5.4 +/-    0.95      12.2 +/-    0.95  0.030 / 0.040
G29     161.6          62.2                7.1 +/-    0.46       7.9 +/-    0.46  0.030 / 0.040