PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/16-13:27:50
G01     230.4          21.7                5.8 +/-    2.20      12.2 +/-    2.20  0.090 / 0.200
G03     294.5          68.6                6.0 +/-    0.28       6.4 +/-    0.28  0.170 / 0.160
G14     80.9           27.4                6.9 +/-    1.16      12.8 +/-    1.16  0.040 / 0.040
G16     155.3          36.1                9.7 +/-    0.53      15.1 +/-    0.53  0.040 / 0.030
G22     214.6          73.6                7.4 +/-    0.63       7.7 +/-    0.63  0.070 / 0.140
G23     302.6          33.0                4.4 +/-    0.96       7.3 +/-    0.96  0.080 / 0.130
G26     113.9          52.4                9.2 +/-    0.83      11.3 +/-    0.83  0.130 / 0.340
G31     43.1           38.7                6.4 +/-    0.93       9.5 +/-    0.93  0.190 / 0.260
G32     92.1           14.8                8.1 +/-    1.30      20.3 +/-    1.30  0.030 / 0.030