PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/28-19:28:00
G01     321.0          11.5               -0.2 +/-   32.28      -0.5 +/-   32.28  0.040 / 0.050
G08     262.3          17.0               10.1 +/-    2.23      23.8 +/-    2.23  0.040 / 0.050
G10     67.3           56.6                7.3 +/-    0.42       8.6 +/-    0.42  0.120 / 0.230
G11     308.6          19.9                8.0 +/-    1.22      17.7 +/-    1.22  0.240 / 0.290
G14     274.8          68.3                8.2 +/-    0.86       8.7 +/-    0.86  0.260 / 0.480
G20     98.4           34.5                8.5 +/-    0.69      13.6 +/-    0.69  0.250 / 0.490
G21     154.6          10.3               10.0 +/-    5.21      27.7 +/-    5.21  0.140 / 0.370
G27     231.6          14.5               10.3 +/-    1.03      25.9 +/-    1.03  0.140 / 0.430
G31     179.7          31.3                9.8 +/-    2.15      16.7 +/-    2.15  0.140 / 0.420
G32     347.1          72.8                8.3 +/-    0.56       8.6 +/-    0.56  0.140 / 0.360