PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/18-04:58:00
G01     230.1          22.3                6.8 +/-    2.78      14.1 +/-    2.78  0.070 / 0.170
G03     302.9          62.4                3.9 +/-    0.85       4.3 +/-    0.85  0.070 / 0.150
G14     78.6           30.1                2.5 +/-    0.68       4.3 +/-    0.68  0.030 / 0.030
G16     150.9          37.5                5.6 +/-    1.15       8.5 +/-    1.15  0.030 / 0.030
G18     207.0          11.6                3.5 +/-    2.67       9.3 +/-    2.67  0.040 / 0.050
G22     245.3          74.5                3.5 +/-    0.32       3.7 +/-    0.32  0.040 / 0.060
G23     303.4          35.0                4.0 +/-    1.28       6.4 +/-    1.28  0.170 / 0.240
G26     110.3          51.7                3.9 +/-    0.60       4.8 +/-    0.60  0.110 / 0.190
G31     43.5           37.2                1.5 +/-    0.42       2.3 +/-    0.42  0.070 / 0.110
G32     93.1           10.9                3.0 +/-    1.76       8.3 +/-    1.76  0.070 / 0.100