PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/27-21:58:10
G10     253.3          29.0               12.1 +/-    1.42      21.7 +/-    1.42  0.040 / 0.070
G13     50.7           27.9                8.2 +/-    0.67      15.1 +/-    0.67  0.040 / 0.060
G15     86.5           59.1               11.3 +/-    0.60      13.0 +/-    0.60  0.230 / 0.650
G16     290.8          15.8                7.8 +/-    2.89      19.1 +/-    2.89  0.160 / 0.560
G20     255.2          17.3                5.9 +/-    0.96      13.9 +/-    0.96  0.080 / 0.160
G21     336.0          61.5               10.0 +/-    0.62      11.2 +/-    0.62  0.060 / 0.170
G26     263.3          14.4               10.6 +/-    1.98      26.7 +/-    1.98  0.030 / 0.040
G29     166.0          47.8               11.5 +/-    0.92      14.9 +/-    0.92  0.020 / 0.050