PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/22-10:27:50
G01     310.4          31.4                4.9 +/-    1.28       8.4 +/-    1.28  0.080 / 0.130
G10     101.8          41.7                5.4 +/-    0.78       7.7 +/-    0.78  0.100 / 0.120
G11     285.3          27.9                2.7 +/-    1.49       5.0 +/-    1.49  0.050 / 0.050
G14     349.2          68.7                4.7 +/-    0.92       5.0 +/-    0.92  0.040 / 0.060
G18     281.2          50.4                3.2 +/-    0.79       4.0 +/-    0.79  0.120 / 0.150
G20     118.0          16.9                4.6 +/-    2.20      10.8 +/-    2.20  0.100 / 0.160
G22     309.6          26.8                3.2 +/-    1.74       6.1 +/-    1.74  0.040 / 0.050
G25     85.6           14.8                3.7 +/-    1.45       9.2 +/-    1.45  0.040 / 0.060
G31     170.5          59.8                6.1 +/-    0.68       6.9 +/-    0.68  0.080 / 0.140
G32     24.8           59.2                4.4 +/-    0.90       5.0 +/-    0.90  0.080 / 0.140