PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/23-08:27:50
G07     328.3          56.8                5.2 +/-    1.00       6.1 +/-    1.00  0.050 / 0.060
G08     115.4          49.6                8.6 +/-    0.71      10.9 +/-    0.71  0.050 / 0.050
G09     205.0          79.7                6.2 +/-    0.64       6.3 +/-    0.64  0.050 / 0.080
G11     150.0          10.1               -6.3 +/-   12.01     -17.4 +/-   12.01  0.040 / 0.090
G16     45.3           10.8                2.2 +/-    2.15       6.0 +/-    2.15  0.160 / 0.560
G23     152.3          45.4                7.8 +/-    1.59      10.4 +/-    1.59  0.140 / 0.520
G27     61.9           34.6                4.8 +/-    0.97       7.7 +/-    0.97  0.160 / 0.520
G28     231.4          18.4                6.0 +/-    2.82      13.7 +/-    2.82  0.150 / 0.430
G30     297.0          31.0                6.6 +/-    1.65      11.4 +/-    1.65  0.050 / 0.080