PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/25-00:12:30
G07     340.1          60.4                7.0 +/-    0.47       7.9 +/-    0.47  0.130 / 0.130
G08     92.6           53.0                8.5 +/-    0.68      10.3 +/-    0.68  0.080 / 0.120
G09     188.5          69.5                9.0 +/-    0.81       9.6 +/-    0.81  0.050 / 0.030
G11     144.3          15.4               10.5 +/-    1.35      25.8 +/-    1.35  0.060 / 0.030
G23     156.8          36.3                8.8 +/-    0.59      13.6 +/-    0.59  0.050 / 0.150
G27     50.2           28.3                5.1 +/-    2.81       9.3 +/-    2.81  0.090 / 0.120
G28     241.6          33.9                8.9 +/-    1.52      14.4 +/-    1.52  0.040 / 0.030
G30     308.1          41.2                7.2 +/-    1.13      10.3 +/-    1.13  0.040 / 0.030