PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/15-19:43:00
G10     255.8          30.0               14.3 +/-    2.01      24.9 +/-    2.01  0.200 / 0.330
G13     49.5           27.7               10.9 +/-    0.89      20.2 +/-    0.89  0.140 / 0.300
G15     74.3           55.1               12.9 +/-    0.47      15.3 +/-    0.47  0.050 / 0.060
G16     294.5          13.3                9.8 +/-    1.76      25.5 +/-    1.76  0.050 / 0.080
G18     279.8          60.1               12.7 +/-    1.07      14.4 +/-    1.07  0.050 / 0.050
G20     46.5           44.0               12.6 +/-    0.89      17.2 +/-    0.89  0.050 / 0.050
G21     346.3          66.1               11.0 +/-    0.89      11.9 +/-    0.89  0.140 / 0.290
G26     267.2          12.8               12.2 +/-    0.92      32.1 +/-    0.92  0.120 / 0.320
G27     321.7          11.3               -0.4 +/-   33.47      -1.1 +/-   33.47  0.100 / 0.260
G29     163.8          37.7               14.9 +/-    1.00      22.5 +/-    1.00  0.100 / 0.300