PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/11-17:57:50
G10     254.4          31.4               12.5 +/-    1.58      21.2 +/-    1.58  0.040 / 0.050
G13     49.4           26.2               10.1 +/-    1.99      19.3 +/-    1.99  0.040 / 0.040
G15     76.7           55.7               10.2 +/-    1.03      12.1 +/-    1.03  0.040 / 0.060
G20     277.9          54.9               11.5 +/-    3.09      13.7 +/-    3.09  0.070 / 0.070
G21     339.2          62.5               10.8 +/-    0.85      12.0 +/-    0.85  0.090 / 0.280
G26     264.3          13.8                8.4 +/-    1.92      21.6 +/-    1.92  0.130 / 0.220
G29     165.0          46.4               11.7 +/-    1.50      15.5 +/-    1.50  0.040 / 0.030