PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-17:27:30
G02     200.6          17.4               14.9 +/-    1.66      35.1 +/-    1.66  0.070 / 0.190
G06     169.5          52.9               16.2 +/-    1.78      19.7 +/-    1.78  0.080 / 0.190
G13     228.6          14.5               14.2 +/-    2.58      35.8 +/-    2.58  0.090 / 0.180
G17     18.6           61.8               12.4 +/-    0.63      13.8 +/-    0.63  0.090 / 0.190
G19     306.3          70.4               13.6 +/-    0.79      14.3 +/-    0.79  0.080 / 0.240
G24     310.8          29.0               12.2 +/-    1.73      21.7 +/-    1.73  0.070 / 0.210
G28     85.5           41.0               13.8 +/-    0.55      19.8 +/-    0.55  0.040 / 0.090
G30     157.1          17.2               14.1 +/-    1.25      33.1 +/-    1.25  0.050 / 0.080