PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/05-14:57:50
G02     202.1          26.7               17.0 +/-    0.70      31.9 +/-    0.70  0.130 / 0.380
G06     167.4          62.1               16.1 +/-    1.00      18.0 +/-    1.00  0.110 / 0.410
G12     304.4          10.8               -2.3 +/-   24.82      -6.3 +/-   24.82  0.070 / 0.120
G17     33.1           51.7               12.5 +/-    0.80      15.4 +/-    0.80  0.060 / 0.120
G19     352.9          67.9               13.0 +/-    0.92      13.9 +/-    0.92  0.030 / 0.040
G24     305.6          33.4               13.1 +/-    2.38      21.4 +/-    2.38  0.030 / 0.040
G28     96.9           34.7               13.1 +/-    0.83      20.9 +/-    0.83  0.030 / 0.050