PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/20-22:43:10
G10     260.1          34.0               12.6 +/-    1.51      20.3 +/-    1.51  0.130 / 0.230
G13     45.4           23.0                9.4 +/-    1.90      19.3 +/-    1.90  0.110 / 0.230
G15     71.9           56.2               10.4 +/-    0.68      12.2 +/-    0.68  0.060 / 0.060
G16     283.6          14.4               11.1 +/-    2.50      28.1 +/-    2.50  0.050 / 0.070
G20     262.3          25.7                7.1 +/-    0.97      13.6 +/-    0.97  0.130 / 0.300
G21     346.6          66.8                9.5 +/-    0.98      10.2 +/-    0.98  0.120 / 0.410
G24     124.2          10.5               -6.5 +/-   44.62     -17.8 +/-   44.62  0.080 / 0.200
G26     256.8          11.0               13.8 +/-    2.82      37.6 +/-    2.82  0.080 / 0.200
G27     321.2          13.2                8.6 +/-    4.00      22.3 +/-    4.00  0.190 / 0.380
G29     167.5          39.6               13.6 +/-    1.05      19.9 +/-    1.05  0.160 / 0.290