PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/06-18:42:50
G01     119.0          18.1               15.7 +/-    0.94      36.3 +/-    0.94  0.040 / 0.080
G07     80.3           66.8               11.1 +/-    0.43      11.9 +/-    0.43  0.040 / 0.080
G08     45.8           34.0               10.6 +/-    0.41      17.1 +/-    0.41  0.030 / 0.040
G09     177.2          26.1               13.6 +/-    1.06      26.0 +/-    1.06  0.020 / 0.040
G11     108.1          40.0               14.4 +/-    0.91      21.0 +/-    0.91  0.120 / 0.430
G13     317.7          19.4               10.4 +/-    1.91      23.3 +/-    1.91  0.120 / 0.380
G17     202.9          21.4               13.2 +/-    1.58      28.1 +/-    1.58  0.050 / 0.090
G18     94.5           20.9               13.7 +/-    0.60      29.5 +/-    0.60  0.040 / 0.110
G28     293.7          57.6               11.3 +/-    1.11      13.1 +/-    1.11  0.030 / 0.040
G30     350.0          69.7               10.3 +/-    1.58      10.9 +/-    1.58  0.040 / 0.040