PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/11-15:28:10
G02     211.7          52.6               15.3 +/-    1.15      18.7 +/-    1.15  0.100 / 0.100
G06     83.5           79.2               12.9 +/-    0.96      13.1 +/-    0.96  0.050 / 0.110
G12     316.7          30.7               12.7 +/-    0.90      22.0 +/-    0.90  0.060 / 0.080
G17     54.5           33.8               11.3 +/-    0.85      18.3 +/-    0.85  0.060 / 0.070
G19     35.2           51.5               12.3 +/-    0.30      15.3 +/-    0.30  0.020 / 0.030
G24     275.9          42.0               11.8 +/-    1.14      16.6 +/-    1.14  0.030 / 0.030
G28     119.0          17.4               11.6 +/-    1.87      27.3 +/-    1.87  0.040 / 0.080