PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/24-08:27:50
G08     264.3          15.5                4.6 +/-    2.58      11.4 +/-    2.58  0.040 / 0.050
G10     71.5           55.9                5.2 +/-    0.67       6.1 +/-    0.67  0.040 / 0.050
G11     308.1          19.8                4.7 +/-    1.08      10.4 +/-    1.08  0.300 / 0.520
G14     273.4          65.4                5.7 +/-    0.42       6.2 +/-    0.42  0.180 / 0.370
G18     309.2          35.8                6.3 +/-    1.16       9.9 +/-    1.16  0.250 / 0.400
G20     106.1          17.8                4.6 +/-    1.58      10.6 +/-    1.58  0.180 / 0.400
G21     155.6          10.2                4.0 +/-    2.81      11.0 +/-    2.81  0.100 / 0.230
G27     227.3          11.9                4.9 +/-    5.63      13.0 +/-    5.63  0.100 / 0.240
G31     175.3          38.4                7.0 +/-    1.14      10.4 +/-    1.14  0.200 / 0.260
G32     1.5            69.9                5.9 +/-    0.35       6.2 +/-    0.35  0.160 / 0.290