PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/29-06:57:30
G02     273.3          81.8                3.7 +/-    0.82       3.7 +/-    0.82  0.040 / 0.040
G05     169.0          21.8                5.6 +/-    0.93      11.7 +/-    0.93  0.040 / 0.050
G06     39.1           56.2                3.4 +/-    0.86       4.0 +/-    0.86  0.070 / 0.130
G12     320.7          56.2                2.7 +/-    0.75       3.2 +/-    0.75  0.050 / 0.140
G17     75.6           19.5                4.2 +/-    0.93       9.3 +/-    0.93  0.040 / 0.030
G19     63.5           34.5                3.5 +/-    0.48       5.7 +/-    0.48  0.050 / 0.030
G24     240.5          31.6                7.8 +/-    1.94      13.2 +/-    1.94  0.150 / 0.230
G25     317.6          16.8                3.3 +/-    1.99       7.9 +/-    1.99  0.100 / 0.200