PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/12-10:13:10
G07     326.1          55.3                4.3 +/-    0.69       5.1 +/-    0.69  0.110 / 0.140
G08     104.3          50.0                7.2 +/-    0.42       9.0 +/-    0.42  0.110 / 0.120
G09     190.7          76.8                5.7 +/-    0.42       5.8 +/-    0.42  0.030 / 0.040
G11     147.9          10.6               -1.5 +/-   15.45      -4.0 +/-   15.45  0.030 / 0.040
G23     153.9          47.2                6.7 +/-    0.75       8.7 +/-    0.75  0.040 / 0.060
G27     60.4           34.2                5.5 +/-    0.89       8.9 +/-    0.89  0.040 / 0.060
G28     233.5          25.3                6.6 +/-    2.24      12.8 +/-    2.24  0.060 / 0.070
G30     297.3          30.5                5.2 +/-    1.28       9.1 +/-    1.28  0.040 / 0.070