PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/20-18:42:50
G05     50.2           14.5                7.6 +/-    2.23      19.1 +/-    2.23  0.130 / 0.220
G10     239.5          18.1                9.3 +/-    1.78      21.5 +/-    1.78  0.070 / 0.250
G13     68.0           34.4                9.3 +/-    0.77      14.9 +/-    0.77  0.060 / 0.060
G15     115.6          55.4               10.7 +/-    0.62      12.6 +/-    0.62  0.060 / 0.080
G16     308.9          14.4                6.4 +/-    2.05      16.1 +/-    2.05  0.060 / 0.110
G20     254.1          42.1               11.6 +/-    1.00      16.4 +/-    1.00  0.050 / 0.130
G21     318.2          49.7               10.6 +/-    1.08      13.4 +/-    1.08  0.110 / 0.350
G26     282.1          19.5                7.2 +/-    1.95      16.1 +/-    1.95  0.130 / 0.440
G29     157.4          67.1               11.4 +/-    1.02      12.2 +/-    1.02  0.030 / 0.040