PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-13:58:10
G07     353.0          64.1                7.1 +/-    0.66       7.8 +/-    0.66  0.030 / 0.030
G08     78.5           52.2                8.2 +/-    0.43      10.0 +/-    0.43  0.030 / 0.050
G09     180.7          59.5                8.2 +/-    1.69       9.4 +/-    1.69  0.080 / 0.090
G11     137.6          21.1                9.9 +/-    1.35      21.1 +/-    1.35  0.080 / 0.070
G23     158.0          27.2                9.4 +/-    0.93      17.6 +/-    0.93  0.050 / 0.110
G27     45.5           24.3                7.2 +/-    1.56      14.4 +/-    1.56  0.060 / 0.110
G28     248.1          38.7                8.8 +/-    0.52      13.2 +/-    0.52  0.080 / 0.260
G30     311.6          43.1                6.0 +/-    1.05       8.3 +/-    1.05  0.080 / 0.200