PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/19-00:13:00
G10     242.5          19.4               15.0 +/-    1.95      33.4 +/-    1.95  0.120 / 0.600
G13     64.1           34.4               10.4 +/-    0.85      16.7 +/-    0.85  0.150 / 0.520
G15     111.9          57.2               12.4 +/-    0.59      14.5 +/-    0.59  0.060 / 0.060
G16     304.3          15.5                8.1 +/-    5.31      19.9 +/-    5.31  0.040 / 0.060
G20     251.3          28.8                9.5 +/-    2.49      17.0 +/-    2.49  0.090 / 0.170
G21     321.4          52.5               12.9 +/-    1.05      15.8 +/-    1.05  0.100 / 0.180
G26     276.2          19.2               11.6 +/-    1.47      26.1 +/-    1.47  0.020 / 0.040
G29     161.8          62.8               12.7 +/-    1.32      14.1 +/-    1.32  0.030 / 0.040