PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/11-16:12:30
G02     233.9          72.3               14.2 +/-    0.49      14.9 +/-    0.49  0.030 / 0.070
G05     176.2          11.1                5.3 +/-   33.27      14.5 +/-   33.27  0.030 / 0.070
G06     41.5           61.6               14.4 +/-    0.67      16.1 +/-    0.67  0.060 / 0.100
G12     321.6          49.6               14.0 +/-    1.00      17.7 +/-    1.00  0.060 / 0.110
G17     70.8           21.4               12.3 +/-    1.22      26.1 +/-    1.22  0.100 / 0.280
G19     56.8           38.4               13.6 +/-    0.86      20.3 +/-    0.86  0.120 / 0.260
G24     249.8          36.3               14.5 +/-    0.69      22.4 +/-    0.69  0.030 / 0.050
G25     316.5          13.5               11.0 +/-    3.61      28.3 +/-    3.61  0.030 / 0.040