PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-21:12:30
G02     33.2           55.7                9.5 +/-    0.65      11.3 +/-    0.65  0.040 / 0.110
G05     140.4          64.0               12.2 +/-    0.88      13.5 +/-    0.88  0.040 / 0.090
G06     56.3           12.7                7.3 +/-    1.40      19.1 +/-    1.40  0.040 / 0.050
G12     193.5          62.5               11.8 +/-    1.79      13.1 +/-    1.79  0.030 / 0.050
G20     198.1          31.4               12.4 +/-    2.19      21.2 +/-    2.19  0.030 / 0.040
G25     283.9          59.3               11.3 +/-    0.94      12.9 +/-    0.94  0.030 / 0.040
G29     310.8          32.2                9.8 +/-    1.40      16.3 +/-    1.40  0.030 / 0.040