PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/23-01:57:50
G10     302.1          53.3                9.0 +/-    1.10      10.9 +/-    1.10  0.100 / 0.090
G14     211.4          12.7               15.9 +/-    5.44      41.9 +/-    5.44  0.070 / 0.090
G15     46.0           27.7                5.4 +/-    1.77      10.0 +/-    1.77  0.130 / 0.550
G20     317.7          59.6               12.4 +/-    0.77      14.1 +/-    0.77  0.110 / 0.540
G21     104.1          73.0               10.8 +/-    0.87      11.2 +/-    0.87  0.090 / 0.140
G24     92.7           27.4               10.2 +/-    1.53      18.8 +/-    1.53  0.110 / 0.150
G27     297.1          35.4                9.4 +/-    1.20      14.7 +/-    1.20  0.050 / 0.050
G32     211.6          36.9               13.8 +/-    1.52      21.2 +/-    1.52  0.050 / 0.060