PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/06-20:12:50
G01     74.2           33.3               13.3 +/-    1.02      21.9 +/-    1.02  0.120 / 0.260
G07     135.7          34.1               14.8 +/-    1.37      23.9 +/-    1.37  0.100 / 0.280
G11     56.6           33.6               12.9 +/-    1.96      21.1 +/-    1.96  0.050 / 0.090
G13     278.4          37.7               12.3 +/-    2.06      18.6 +/-    2.06  0.060 / 0.090
G15     305.3          14.5                7.2 +/-    1.62      18.1 +/-    1.62  0.030 / 0.030
G17     228.0          62.5               13.3 +/-    1.22      14.7 +/-    1.22  0.030 / 0.030
G18     51.7           19.8               12.0 +/-    4.90      26.4 +/-    4.90  0.070 / 0.100
G19     222.2          38.1               14.4 +/-    2.09      21.6 +/-    2.09  0.220 / 0.270
G28     15.0           59.8               12.3 +/-    0.77      14.0 +/-    0.77  0.040 / 0.050
G30     132.2          63.3               13.2 +/-    0.49      14.6 +/-    0.49  0.030 / 0.040