PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/01-20:13:20
G10     245.9          21.7               24.4 +/-    2.10      51.4 +/-    2.10  0.030 / 0.060
G13     60.6           34.2               16.6 +/-    0.53      26.8 +/-    0.53  0.040 / 0.050
G15     98.3           57.5               18.7 +/-    0.43      21.7 +/-    0.43  0.130 / 0.430
G16     305.2          13.5               17.7 +/-    1.80      45.7 +/-    1.80  0.120 / 0.350
G18     261.3          52.6               20.6 +/-    1.12      25.2 +/-    1.12  0.140 / 0.290
G20     38.6           53.7               16.6 +/-    0.48      20.0 +/-    0.48  0.130 / 0.250
G21     328.9          57.7               18.1 +/-    0.69      21.0 +/-    0.69  0.040 / 0.060
G26     277.8          17.0               19.8 +/-    1.89      47.0 +/-    1.89  0.050 / 0.070
G29     160.7          51.5               20.1 +/-    0.81      24.9 +/-    0.81  0.060 / 0.150