PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/25-22:42:40
G10     269.3          39.6               24.2 +/-    1.19      35.5 +/-    1.19  0.180 / 0.230
G13     40.9           16.5               15.4 +/-    3.01      37.0 +/-    3.01  0.190 / 0.230
G15     59.7           50.7               18.7 +/-    0.25      23.4 +/-    0.25  0.040 / 0.040
G16     275.3          11.7               21.1 +/-   16.94      56.7 +/-   16.94  0.050 / 0.040
G20     268.7          28.8               11.4 +/-    0.97      20.5 +/-    0.97  0.200 / 0.330
G21     4.4            72.6               20.5 +/-    0.56      21.4 +/-    0.56  0.150 / 0.480
G24     116.9          15.6               20.2 +/-    0.58      49.7 +/-    0.58  0.180 / 0.640
G27     317.9          20.1               18.6 +/-    1.17      40.8 +/-    1.17  0.180 / 0.630
G29     168.6          30.2               21.7 +/-    1.20      37.8 +/-    1.20  0.130 / 0.200
G32     204.1          12.6               29.4 +/-    3.62      77.4 +/-    3.62  0.130 / 0.200