PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/16-08:57:40
G07     329.5          57.3                4.3 +/-    0.47       5.0 +/-    0.47  0.070 / 0.070
G09     203.8          79.3                4.7 +/-    0.39       4.8 +/-    0.39  0.050 / 0.070
G11     149.5          10.5               -2.3 +/-   15.25      -6.3 +/-   15.25  0.040 / 0.050
G16     45.4           10.4                2.0 +/-    4.15       5.6 +/-    4.15  0.030 / 0.050
G23     152.4          44.4                6.0 +/-    0.64       8.1 +/-    0.64  0.180 / 0.430
G27     61.3           34.4                4.2 +/-    1.31       6.8 +/-    1.31  0.140 / 0.610
G28     231.8          19.0                4.1 +/-    2.07       9.2 +/-    2.07  0.030 / 0.030
G30     297.6          31.6                4.4 +/-    1.60       7.5 +/-    1.60  0.030 / 0.030