PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/12-16:13:00
G01     246.1          32.6                9.4 +/-    1.00      15.6 +/-    1.00  0.030 / 0.040
G03     314.0          53.0                9.9 +/-    0.78      12.1 +/-    0.78  0.030 / 0.040
G14     63.5           39.9                8.7 +/-    0.90      12.7 +/-    0.90  0.060 / 0.090
G16     160.6          22.8               12.0 +/-    2.74      24.8 +/-    2.74  0.070 / 0.100
G22     293.1          72.7                9.6 +/-    0.79      10.0 +/-    0.79  0.090 / 0.160
G23     291.3          24.3                9.4 +/-    1.75      18.8 +/-    1.75  0.090 / 0.180
G31     40.6           52.3               10.0 +/-    0.58      12.3 +/-    0.58  0.060 / 0.030
G32     81.8           19.0                8.9 +/-    1.98      20.0 +/-    1.98  0.030 / 0.050