PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/30-16:58:00
G01     121.5          16.1               13.9 +/-    1.73      33.5 +/-    1.73  0.050 / 0.080
G07     72.3           68.1               12.2 +/-    0.83      13.1 +/-    0.83  0.040 / 0.090
G08     46.8           35.5               11.2 +/-    0.48      17.7 +/-    0.48  0.030 / 0.050
G09     177.2          28.7               14.1 +/-    3.45      25.4 +/-    3.45  0.030 / 0.040
G11     111.2          38.7               13.4 +/-    0.63      19.8 +/-    0.63  0.030 / 0.040
G13     318.9          17.1               11.5 +/-    1.89      27.1 +/-    1.89  0.030 / 0.040
G17     201.8          19.5               14.6 +/-    1.38      32.4 +/-    1.38  0.040 / 0.090
G18     97.4           19.7               12.9 +/-    0.74      28.7 +/-    0.74  0.040 / 0.110
G28     287.9          56.3               13.4 +/-    0.67      15.7 +/-    0.67  0.100 / 0.190
G30     343.0          66.6               11.7 +/-    0.56      12.6 +/-    0.56  0.090 / 0.180