PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/21-20:57:40
G10     272.3          41.3               10.4 +/-    0.90      14.8 +/-    0.90  0.120 / 0.190
G13     39.9           14.4                8.6 +/-    2.17      21.8 +/-    2.17  0.100 / 0.180
G15     57.9           49.9               10.3 +/-    0.47      13.0 +/-    0.47  0.050 / 0.040
G16     274.1          10.5                8.5 +/-    3.25      23.3 +/-    3.25  0.060 / 0.040
G20     306.9          62.2                9.5 +/-    1.31      10.6 +/-    1.31  0.110 / 0.650
G21     16.5           74.5               11.7 +/-    0.44      12.0 +/-    0.44  0.090 / 0.560
G24     113.8          17.1               11.3 +/-    1.14      26.6 +/-    1.14  0.120 / 0.260
G27     316.9          21.5                7.8 +/-    3.82      16.5 +/-    3.82  0.110 / 0.260
G29     168.4          26.8               12.2 +/-    0.74      23.0 +/-    0.74  0.120 / 0.390
G32     204.7          14.3               11.5 +/-    2.12      29.1 +/-    2.12  0.090 / 0.300