PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/12-11:12:40
G01     308.9          32.6                5.1 +/-    1.00       8.5 +/-    1.00  0.070 / 0.110
G10     103.8          40.4                5.4 +/-    0.71       7.9 +/-    0.71  0.100 / 0.080
G11     283.1          28.0                4.5 +/-    0.81       8.2 +/-    0.81  0.040 / 0.040
G14     353.9          67.9                4.0 +/-    0.74       4.3 +/-    0.74  0.040 / 0.050
G18     277.8          50.8                4.3 +/-    1.42       5.3 +/-    1.42  0.060 / 0.030
G20     119.2          15.5                5.2 +/-    2.24      12.7 +/-    2.24  0.050 / 0.030
G25     83.5           15.4                3.0 +/-    2.42       7.4 +/-    2.42  0.050 / 0.050
G31     169.9          61.5                7.6 +/-    0.49       8.5 +/-    0.49  0.050 / 0.050
G32     26.2           58.4                4.6 +/-    1.11       5.4 +/-    1.11  0.150 / 0.220