PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/23-23:28:00
G05     48.3           18.1                6.9 +/-    0.49      16.0 +/-    0.49  0.070 / 0.160
G10     235.1          11.2                5.9 +/-   38.62      15.9 +/-   38.62  0.080 / 0.160
G13     77.8           36.4               10.0 +/-    0.68      15.5 +/-    0.68  0.090 / 0.350
G15     130.8          50.8               12.6 +/-    0.57      15.7 +/-    0.57  0.090 / 0.310
G16     314.3          12.7                8.8 +/-    2.70      23.1 +/-    2.70  0.170 / 0.230
G20     242.3          18.1               10.6 +/-    1.10      24.5 +/-    1.10  0.130 / 0.290
G21     310.8          45.2                9.2 +/-    1.17      12.3 +/-    1.17  0.130 / 0.390
G25     199.9          12.0               11.8 +/-    2.13      31.5 +/-    2.13  0.180 / 0.350
G26     287.6          21.0               10.1 +/-    1.95      21.6 +/-    1.95  0.040 / 0.080
G29     154.8          75.6                9.9 +/-    0.87      10.2 +/-    0.87  0.040 / 0.080