PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/19-19:57:50
G10     268.0          40.2               11.8 +/-    1.09      17.1 +/-    1.09  0.110 / 0.180
G13     41.2           16.8                7.1 +/-    1.61      16.8 +/-    1.61  0.120 / 0.230
G15     58.7           48.6                9.3 +/-    0.75      11.9 +/-    0.75  0.050 / 0.050
G16     278.1          12.5                9.8 +/-    2.78      26.0 +/-    2.78  0.040 / 0.050
G20     300.8          61.1                9.5 +/-    0.75      10.7 +/-    0.75  0.110 / 0.300
G21     2.4            71.5               10.9 +/-    0.53      11.5 +/-    0.53  0.200 / 0.400
G24     121.7          14.4               12.3 +/-    1.83      31.1 +/-    1.83  0.160 / 0.430
G27     318.7          18.9                9.2 +/-    0.95      20.8 +/-    0.95  0.170 / 0.570
G29     167.4          31.4               11.9 +/-    0.81      20.3 +/-    0.81  0.030 / 0.060