PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/07-15:12:30
G02     204.9          37.4               15.2 +/-    1.23      23.1 +/-    1.23  0.040 / 0.030
G03     55.2           9.6                13.1 +/-    2.32      36.9 +/-    2.32  0.030 / 0.040
G06     153.8          73.1               13.9 +/-    0.46      14.5 +/-    0.46  0.110 / 0.250
G12     310.1          18.6               10.3 +/-    2.19      23.3 +/-    2.19  0.110 / 0.230
G17     42.4           43.9               11.0 +/-    1.07      15.1 +/-    1.07  0.060 / 0.070
G19     14.4           61.4               12.3 +/-    0.71      13.8 +/-    0.71  0.080 / 0.070
G24     295.0          39.0               10.9 +/-    2.06      16.2 +/-    2.06  0.150 / 0.140
G28     107.0          27.8               12.3 +/-    0.93      22.5 +/-    0.93  0.080 / 0.110