PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/23-17:27:50
G05     50.3           15.7                7.3 +/-    1.77      17.9 +/-    1.77  0.080 / 0.340
G10     240.0          17.2               12.2 +/-    1.10      28.7 +/-    1.10  0.070 / 0.370
G13     68.0           35.1               10.5 +/-    1.38      16.7 +/-    1.38  0.060 / 0.060
G15     120.6          55.6               10.7 +/-    0.58      12.6 +/-    0.58  0.040 / 0.050
G16     308.9          14.1                6.2 +/-    4.00      15.6 +/-    4.00  0.280 / 0.160
G20     253.8          41.4               11.9 +/-    2.87      16.9 +/-    2.87  0.120 / 0.130
G21     320.1          51.6               -1.9 +/-    0.66      -2.3 +/-    0.66  0.070 / 0.110
G26     282.1          19.4                8.4 +/-    1.03      18.7 +/-    1.03  0.050 / 0.120
G29     158.8          65.5               11.8 +/-    0.55      12.8 +/-    0.55  0.040 / 0.040