PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/17-19:57:50
G10     264.0          37.8               13.0 +/-    2.36      19.7 +/-    2.36  0.040 / 0.040
G13     43.0           19.5                9.1 +/-    2.11      20.3 +/-    2.11  0.040 / 0.040
G15     63.0           51.4               10.7 +/-    0.87      13.2 +/-    0.87  0.150 / 0.190
G16     281.6          13.6                8.1 +/-    2.82      20.8 +/-    2.82  0.130 / 0.360
G20     293.6          59.5               11.0 +/-    0.80      12.5 +/-    0.80  0.030 / 0.040
G21     354.4          69.1               11.6 +/-    0.69      12.3 +/-    0.69  0.040 / 0.050
G24     124.7          12.2               14.9 +/-    2.60      39.7 +/-    2.60  0.240 / 0.220
G27     320.2          16.0                9.2 +/-    1.56      22.3 +/-    1.56  0.200 / 0.290
G29     166.8          35.3               13.5 +/-    1.77      21.3 +/-    1.77  0.130 / 0.760