PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/08-13:57:40
G07     347.1          62.5                6.3 +/-    0.94       7.0 +/-    0.94  0.030 / 0.050
G08     95.9           52.5                9.1 +/-    0.62      11.2 +/-    0.62  0.030 / 0.050
G09     190.8          71.9                8.0 +/-    0.67       8.4 +/-    0.67  0.090 / 0.210
G11     143.4          15.8                8.1 +/-    1.55      19.7 +/-    1.55  0.090 / 0.200
G23     155.6          36.8                8.9 +/-    1.10      13.6 +/-    1.10  0.150 / 0.300
G27     53.5           31.0                6.7 +/-    0.99      11.5 +/-    0.99  0.130 / 0.270
G28     237.7          26.7                7.5 +/-    0.97      14.1 +/-    0.97  0.050 / 0.080
G30     306.4          40.3                6.2 +/-    0.80       8.9 +/-    0.80  0.060 / 0.100