PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/31-00:27:50
G10     268.6          39.2               10.4 +/-    1.96      15.4 +/-    1.96  0.110 / 0.180
G13     41.2           17.1                8.2 +/-    1.31      19.4 +/-    1.31  0.170 / 0.170
G15     59.7           50.2                8.1 +/-    0.40      10.2 +/-    0.40  0.070 / 0.040
G16     276.1          11.8                8.5 +/-   12.47      22.9 +/-   12.47  0.050 / 0.030
G20     276.0          41.9                7.6 +/-    0.71      10.7 +/-    0.71  0.380 / 0.600
G21     3.3            72.3                9.6 +/-    0.64      10.0 +/-    0.64  0.340 / 0.420
G24     117.8          15.2               10.3 +/-    2.10      25.5 +/-    2.10  0.180 / 0.270
G27     318.1          19.8                8.7 +/-    2.19      19.2 +/-    2.19  0.140 / 0.230
G29     168.5          30.7                9.9 +/-    1.03      17.0 +/-    1.03  0.120 / 0.270
G32     204.0          12.0                5.2 +/-   30.82      14.0 +/-   30.82  0.180 / 0.210