PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/14-21:43:00
G10     249.4          27.3                8.6 +/-    1.15      15.9 +/-    1.15  0.040 / 0.040
G13     54.2           29.5                8.1 +/-    1.42      14.3 +/-    1.42  0.040 / 0.060
G15     89.6           57.9                8.5 +/-    0.88       9.8 +/-    0.88  0.110 / 0.140
G16     297.2          15.7                6.6 +/-    2.60      16.2 +/-    2.60  0.120 / 0.160
G20     268.4          50.0                8.1 +/-    2.50      10.3 +/-    2.50  0.040 / 0.030
G21     331.6          58.4                8.1 +/-    0.82       9.3 +/-    0.82  0.040 / 0.040
G26     269.6          16.0                7.4 +/-    3.86      18.0 +/-    3.86  0.120 / 0.380
G29     162.9          51.7               10.4 +/-    0.89      12.8 +/-    0.89  0.120 / 0.420