PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/13-23:13:00
G08     272.5          20.5               12.7 +/-    1.79      27.6 +/-    1.79  0.120 / 0.240
G10     46.8           61.2               13.8 +/-    0.45      15.5 +/-    0.45  0.110 / 0.310
G11     314.8          13.8               10.2 +/-    1.97      26.2 +/-    1.97  0.070 / 0.180
G14     255.2          63.2               13.3 +/-    0.61      14.8 +/-    0.61  0.090 / 0.180
G18     85.5           40.1               15.1 +/-    0.49      21.9 +/-    0.49  0.030 / 0.040
G21     152.4          19.4               19.0 +/-    1.50      42.5 +/-    1.50  0.020 / 0.030
G24     43.4           16.0               12.7 +/-    1.38      30.8 +/-    1.38  0.110 / 0.320
G27     235.5          19.8               17.5 +/-    1.26      38.7 +/-    1.26  0.120 / 0.430
G31     182.0          20.8               22.5 +/-    3.07      48.4 +/-    3.07  0.100 / 0.130
G32     299.3          74.8               14.3 +/-    0.59      14.7 +/-    0.59  0.070 / 0.120