PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/30-16:58:00
G05     50.1           15.8                5.9 +/-    1.64      14.4 +/-    1.64  0.050 / 0.060
G10     239.6          16.8                8.9 +/-    1.01      21.3 +/-    1.01  0.080 / 0.080
G13     68.7           35.3                7.1 +/-    0.75      11.2 +/-    0.75  0.100 / 0.340
G15     121.1          55.3                8.7 +/-    0.63      10.3 +/-    0.63  0.100 / 0.390
G16     309.6          13.9                5.3 +/-    0.96      13.6 +/-    0.96  0.170 / 0.260
G20     253.2          40.9                7.5 +/-    0.93      10.7 +/-    0.93  0.090 / 0.290
G21     319.7          51.4                8.6 +/-    1.45      10.7 +/-    1.45  0.060 / 0.120
G26     282.9          19.4                5.8 +/-    1.24      13.0 +/-    1.24  0.060 / 0.140
G29     158.3          66.0                8.9 +/-    0.45       9.6 +/-    0.45  0.030 / 0.050