PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-08:28:00
G07     45.0           69.2                6.4 +/-    0.74       6.8 +/-    0.74  0.210 / 0.290
G08     56.5           45.5                5.0 +/-    1.03       6.6 +/-    1.03  0.250 / 0.300
G09     177.8          40.6                9.3 +/-    1.40      13.3 +/-    1.40  0.030 / 0.030
G11     124.4          33.5                8.8 +/-    1.09      14.4 +/-    1.09  0.030 / 0.030
G18     107.1          14.4                5.9 +/-    1.89      14.9 +/-    1.89  0.120 / 0.440
G23     159.9          10.5                6.1 +/-    1.76      16.8 +/-    1.76  0.110 / 0.440
G27     37.9           11.2                2.9 +/-    2.82       7.9 +/-    2.82  0.060 / 0.060
G28     263.1          44.4                5.5 +/-    4.35       7.5 +/-    4.35  0.050 / 0.080
G30     326.1          55.9                5.5 +/-    0.66       6.5 +/-    0.66  0.130 / 0.180