PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/19-11:13:10
G01     295.1          39.8                8.8 +/-    7.19      12.8 +/-    7.19  0.080 / 0.070
G10     116.6          30.4                4.2 +/-    0.77       7.4 +/-    0.77  0.070 / 0.080
G11     268.0          26.5                5.5 +/-    2.19      10.4 +/-    2.19  0.070 / 0.080
G14     19.7           60.6                4.5 +/-    0.93       5.1 +/-    0.93  0.100 / 0.070
G18     255.0          49.3                5.9 +/-    3.43       7.5 +/-    3.43  0.050 / 0.050
G22     314.3          39.9                2.5 +/-    1.79       3.7 +/-    1.79  0.050 / 0.040
G25     70.1           18.1                3.3 +/-    0.96       7.5 +/-    0.96  0.040 / 0.040
G31     148.1          75.8                5.7 +/-    0.68       5.8 +/-    0.68  0.060 / 0.030
G32     42.9           48.7                3.1 +/-    0.75       4.0 +/-    0.75  0.080 / 0.090