PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/09-00:12:50
G10     280.0          45.1               10.4 +/-    1.25      14.1 +/-    1.25  0.120 / 0.120
G15     51.5           42.6                8.1 +/-    0.89      11.3 +/-    0.89  0.090 / 0.130
G20     283.4          43.3                7.2 +/-    0.52      10.0 +/-    0.52  0.040 / 0.030
G21     36.4           77.1                8.9 +/-    0.80       9.1 +/-    0.80  0.030 / 0.020
G24     108.9          20.6               10.8 +/-    1.51      23.5 +/-    1.51  0.100 / 0.210
G27     312.2          26.9                9.4 +/-    0.85      17.7 +/-    0.85  0.110 / 0.190
G29     169.0          20.7               12.9 +/-    2.80      27.9 +/-    2.80  0.040 / 0.040
G32     205.9          21.2               13.5 +/-    2.68      28.9 +/-    2.68  0.040 / 0.050