PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/18-01:42:40
G10     280.0          45.0               11.5 +/-    1.72      15.5 +/-    1.72  0.070 / 0.150
G15     51.2           41.7                9.9 +/-    0.77      14.0 +/-    0.77  0.080 / 0.170
G20     295.3          54.1                9.4 +/-    0.68      11.3 +/-    0.68  0.050 / 0.050
G21     37.1           77.1               11.3 +/-    0.70      11.6 +/-    0.70  0.050 / 0.040
G24     109.3          20.6               13.0 +/-    1.11      28.3 +/-    1.11  0.060 / 0.060
G27     312.1          27.0                9.3 +/-    1.40      17.4 +/-    1.40  0.070 / 0.060
G29     169.0          20.6               12.5 +/-    1.31      27.2 +/-    1.31  0.090 / 0.140
G32     205.9          21.2               12.6 +/-    1.67      26.9 +/-    1.67  0.110 / 0.130