PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/16-01:57:50
G03     230.9          66.1                4.6 +/-    0.90       5.0 +/-    0.90  0.060 / 0.060
G07     250.8          11.2                3.4 +/-   12.50       9.2 +/-   12.50  0.060 / 0.060
G09     306.4          23.4                2.1 +/-    2.02       4.3 +/-    2.02  0.050 / 0.060
G14     101.5          14.6                5.0 +/-    1.23      12.6 +/-    1.23  0.040 / 0.050
G16     113.6          60.9                7.1 +/-    1.15       8.0 +/-    1.15  0.110 / 0.250
G22     195.6          51.8                8.9 +/-    0.74      11.0 +/-    0.74  0.100 / 0.290
G23     323.4          53.3                6.8 +/-    0.65       8.2 +/-    0.65  0.080 / 0.490
G26     62.8           48.7                3.5 +/-    0.75       4.5 +/-    0.75  0.110 / 0.440
G31     55.0           15.2                2.4 +/-    1.43       6.0 +/-    1.43  0.040 / 0.040