PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/01-16:43:30
G02     33.5           55.5               13.7 +/-    0.46      16.2 +/-    0.46  0.060 / 0.050
G05     146.3          61.1               17.6 +/-    0.44      19.8 +/-    0.44  0.040 / 0.050
G06     53.9           16.8               10.0 +/-    2.16      23.9 +/-    2.16  0.040 / 0.050
G12     200.4          67.5               14.0 +/-    0.75      15.0 +/-    0.75  0.030 / 0.040
G20     198.5          26.9               16.4 +/-    3.33      30.7 +/-    3.33  0.110 / 0.180
G25     293.3          55.9               14.1 +/-    1.18      16.7 +/-    1.18  0.120 / 0.220
G29     310.0          32.3               11.4 +/-    0.89      19.1 +/-    0.89  0.030 / 0.040