PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/14-16:43:00
G02     53.5           37.8               10.1 +/-    0.57      15.3 +/-    0.57  0.140 / 0.310
G05     79.6           69.4               10.3 +/-    0.40      11.0 +/-    0.40  0.130 / 0.300
G12     187.7          41.8               11.7 +/-    1.36      16.6 +/-    1.36  0.020 / 0.040
G20     204.2          50.9               13.1 +/-    2.67      16.3 +/-    2.67  0.020 / 0.040
G21     265.6          14.4               11.0 +/-    0.87      27.7 +/-    0.87  0.060 / 0.070
G25     246.4          56.4               13.1 +/-    0.52      15.4 +/-    0.52  0.080 / 0.070
G29     327.1          52.2                9.3 +/-    0.89      11.4 +/-    0.89  0.050 / 0.080