PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/09-21:27:30
G10     262.9          35.9               12.6 +/-    0.67      19.7 +/-    0.67  0.180 / 0.250
G13     43.8           21.0                9.3 +/-    1.89      20.0 +/-    1.89  0.140 / 0.210
G15     69.7           56.3               10.7 +/-    0.45      12.6 +/-    0.45  0.160 / 0.500
G16     282.0          13.4                9.2 +/-    1.67      23.9 +/-    1.67  0.120 / 0.340
G20     290.2          58.4               10.7 +/-    1.07      12.3 +/-    1.07  0.230 / 0.390
G21     353.9          69.2               10.4 +/-    0.55      11.0 +/-    0.55  0.160 / 0.350
G24     121.4          12.2               13.6 +/-    2.15      36.2 +/-    2.15  0.050 / 0.040
G27     320.6          14.9                8.7 +/-    1.88      21.7 +/-    1.88  0.050 / 0.040
G29     167.6          36.0               11.5 +/-    0.91      17.9 +/-    0.91  0.070 / 0.260