PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/04-15:57:40
G02     249.1          75.5                7.0 +/-    0.97       7.2 +/-    0.97  0.070 / 0.180
G05     171.0          19.0               12.2 +/-    1.21      27.5 +/-    1.21  0.070 / 0.190
G06     40.5           51.8                7.2 +/-    0.40       8.9 +/-    0.40  0.070 / 0.130
G12     322.9          61.9                6.7 +/-    0.82       7.4 +/-    0.82  0.090 / 0.170
G17     75.2           18.0                6.8 +/-    0.95      15.6 +/-    0.95  0.030 / 0.050
G19     58.0           39.4                7.3 +/-    0.48      10.7 +/-    0.48  0.030 / 0.040
G24     238.8          32.1                9.5 +/-    1.03      16.0 +/-    1.03  0.030 / 0.040
G25     317.2          16.8                6.5 +/-    1.85      15.5 +/-    1.85  0.030 / 0.040