PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/08-17:13:10
G01     126.4          11.4               12.2 +/-    2.95      32.9 +/-    2.95  0.080 / 0.070
G07     68.6           65.8               10.4 +/-    0.58      11.3 +/-    0.58  0.150 / 0.110
G08     50.4           39.3                9.0 +/-    1.13      13.3 +/-    1.13  0.030 / 0.030
G09     179.0          37.4               11.2 +/-    0.78      17.0 +/-    0.78  0.040 / 0.030
G11     117.0          36.1               10.9 +/-    0.83      16.9 +/-    0.83  0.030 / 0.040
G13     320.7          12.5               -1.0 +/-   21.73      -2.6 +/-   21.73  0.040 / 0.040
G17     199.4          14.8                8.7 +/-    5.05      21.6 +/-    5.05  0.130 / 0.370
G18     101.7          16.7               11.1 +/-    1.57      26.5 +/-    1.57  0.110 / 0.280
G28     271.1          49.2                8.7 +/-    3.12      11.1 +/-    3.12  0.160 / 0.390
G30     336.2          62.6                8.7 +/-    0.74       9.6 +/-    0.74  0.130 / 0.330