PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/05-16:28:00
G02     226.4          68.0               16.1 +/-    0.94      17.2 +/-    0.94  0.030 / 0.060
G06     44.0           65.8               13.8 +/-    0.37      14.9 +/-    0.37  0.050 / 0.070
G12     321.1          45.5               11.8 +/-    1.61      15.8 +/-    1.61  0.060 / 0.090
G17     67.3           24.0               12.9 +/-    0.76      25.8 +/-    0.76  0.050 / 0.100
G19     52.4           41.1               13.3 +/-    0.90      19.0 +/-    0.90  0.030 / 0.030
G24     255.0          38.4               16.6 +/-    0.92      24.7 +/-    0.92  0.030 / 0.030