PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/28-10:27:40
G07     44.5           69.6                4.2 +/-    0.76       4.4 +/-    0.76  0.030 / 0.050
G08     51.3           39.5                2.2 +/-    0.91       3.3 +/-    0.91  0.030 / 0.040
G09     176.2          36.5                5.3 +/-    0.92       8.2 +/-    0.92  0.030 / 0.030
G11     119.5          33.8                5.1 +/-    0.85       8.3 +/-    0.85  0.030 / 0.040
G17     198.9          13.8                3.0 +/-    2.29       7.6 +/-    2.29  0.220 / 0.340
G18     105.6          15.2                3.9 +/-    1.13       9.6 +/-    1.13  0.260 / 0.350
G23     161.1          11.3                4.7 +/-    1.95      12.7 +/-    1.95  0.120 / 0.250
G28     271.4          51.1                2.1 +/-    1.46       2.6 +/-    1.46  0.110 / 0.200
G30     327.5          56.6                1.3 +/-    0.81       1.5 +/-    0.81  0.050 / 0.090