PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/16-03:42:10
G02     44.6           45.2                4.9 +/-    1.33       6.6 +/-    1.33  0.040 / 0.020
G05     105.1          68.6                6.6 +/-    0.84       7.0 +/-    0.84  0.030 / 0.010
G12     190.9          55.0                6.9 +/-    0.41       8.2 +/-    0.41  0.040 / 0.020
G20     209.5          13.0                5.9 +/-    4.85      15.4 +/-    4.85  0.030 / 0.010
G25     277.1          57.7                8.0 +/-    0.53       9.3 +/-    0.53  0.120 / 0.330
G29     315.2          36.8                6.5 +/-    1.03      10.0 +/-    1.03  0.210 / 0.410