PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/23-20:43:00
G10     268.8          39.5               14.1 +/-    1.53      20.6 +/-    1.53  0.130 / 0.210
G13     41.1           16.8                8.1 +/-    2.21      19.3 +/-    2.21  0.130 / 0.230
G15     61.2           52.1               10.3 +/-    0.56      12.6 +/-    0.56  0.050 / 0.040
G16     277.0          11.7               12.9 +/-    2.77      34.8 +/-    2.77  0.050 / 0.060
G20     300.7          61.0               10.4 +/-    0.78      11.7 +/-    0.78  0.240 / 0.720
G21     7.6            72.8               12.5 +/-    1.13      13.1 +/-    1.13  0.200 / 0.740
G24     116.5          15.4               13.0 +/-    1.12      31.9 +/-    1.12  0.110 / 0.190
G27     318.4          19.1               10.9 +/-    1.82      24.6 +/-    1.82  0.130 / 0.230
G29     168.1          29.9               12.6 +/-    1.80      22.0 +/-    1.80  0.160 / 0.340
G32     204.3          11.4               12.0 +/-   33.71      32.6 +/-   33.71  0.140 / 0.440