PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/29-00:28:10
G10     265.1          37.1               13.6 +/-    1.61      20.8 +/-    1.61  0.120 / 0.140
G13     42.7           19.6                7.5 +/-    0.89      16.7 +/-    0.89  0.110 / 0.160
G15     63.5           52.5                9.7 +/-    0.39      11.8 +/-    0.39  0.110 / 0.340
G16     279.2          12.9               10.7 +/-    1.92      28.0 +/-    1.92  0.110 / 0.330
G20     273.2          40.9                9.1 +/-    1.12      13.1 +/-    1.12  0.160 / 0.320
G21     356.0          70.2               10.5 +/-    0.83      11.1 +/-    0.83  0.150 / 0.370
G24     120.5          13.3               11.5 +/-    1.60      29.7 +/-    1.60  0.070 / 0.090
G27     319.5          17.3                8.1 +/-    2.28      19.0 +/-    2.28  0.080 / 0.100
G29     168.2          34.1               11.7 +/-    2.44      18.8 +/-    2.44  0.040 / 0.050