PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/29-07:42:50
G07     315.5          51.6                4.3 +/-    0.81       5.3 +/-    0.81  0.040 / 0.060
G08     127.0          43.5                6.1 +/-    1.04       8.5 +/-    1.04  0.030 / 0.060
G09     275.1          82.9                4.9 +/-    0.40       4.9 +/-    0.40  0.050 / 0.080
G16     43.0           18.5                2.0 +/-    1.42       4.6 +/-    1.42  0.040 / 0.070
G23     147.4          55.6                6.3 +/-    1.02       7.4 +/-    1.02  0.260 / 0.460
G27     73.3           36.9                3.6 +/-    0.48       5.5 +/-    0.48  0.080 / 0.220
G28     226.0          10.6               -7.7 +/-   10.92     -21.1 +/-   10.92  0.080 / 0.230
G30     289.6          24.8                6.5 +/-    1.73      12.8 +/-    1.73  0.030 / 0.050