PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/31-21:42:30
G10     253.4          29.2               13.8 +/-    1.56      24.5 +/-    1.56  0.040 / 0.060
G13     50.6           27.8                9.3 +/-    0.85      17.2 +/-    0.85  0.040 / 0.060
G15     86.4           59.1               11.7 +/-    0.55      13.3 +/-    0.55  0.150 / 0.550
G16     290.6          15.8               10.1 +/-    2.31      24.7 +/-    2.31  0.140 / 0.560
G20     254.6          15.4                5.8 +/-    0.92      14.2 +/-    0.92  0.070 / 0.140
G21     336.1          61.6                9.8 +/-    0.45      11.0 +/-    0.45  0.070 / 0.190
G26     263.1          14.4               12.7 +/-    2.82      32.1 +/-    2.82  0.040 / 0.040
G29     166.1          47.6               12.2 +/-    0.91      15.8 +/-    0.91  0.020 / 0.040