PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/22-16:57:30
G02     261.7          78.1                8.0 +/-    0.37       8.1 +/-    0.37  0.030 / 0.040
G05     169.6          22.0               10.3 +/-    0.75      21.7 +/-    0.75  0.030 / 0.060
G06     40.4           49.0                6.6 +/-    0.47       8.5 +/-    0.47  0.090 / 0.130
G12     321.8          64.6                6.1 +/-    0.96       6.7 +/-    0.96  0.130 / 0.170
G17     77.5           16.7                6.2 +/-    1.57      14.7 +/-    1.57  0.090 / 0.130
G19     61.5           37.3                7.5 +/-    0.97      11.3 +/-    0.97  0.080 / 0.160
G24     236.1          30.2               11.1 +/-    1.94      19.3 +/-    1.94  0.120 / 0.280
G25     317.5          19.3                7.2 +/-    1.95      16.2 +/-    1.95  0.120 / 0.310