PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/17-21:42:40
G01     127.9          11.1               15.1 +/-    4.89      41.0 +/-    4.89  0.240 / 0.400
G07     48.2           69.8               13.4 +/-    0.41      14.1 +/-    0.41  0.380 / 0.330
G08     53.4           43.7               10.5 +/-    1.03      14.4 +/-    1.03  0.220 / 0.240
G09     179.1          38.1               16.3 +/-    1.12      24.5 +/-    1.12  0.090 / 0.280
G11     122.5          34.1               15.6 +/-    1.01      25.1 +/-    1.01  0.040 / 0.040
G17     200.9          11.4                5.0 +/-   36.46      13.5 +/-   36.46  0.040 / 0.040
G28     275.4          52.8               13.0 +/-    3.80      15.8 +/-    3.80  0.140 / 0.120
G30     336.4          62.1               12.3 +/-    0.71      13.7 +/-    0.71  0.090 / 0.100