PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/21-01:58:00
G01     246.4          34.8                7.5 +/-    2.14      11.9 +/-    2.14  0.090 / 0.090
G03     316.0          44.6                4.2 +/-    0.66       5.7 +/-    0.66  0.100 / 0.110
G14     59.7           41.9                2.9 +/-    1.78       4.2 +/-    1.78  0.050 / 0.080
G16     160.5          20.4               -8.7 +/-    5.96     -19.1 +/-    5.96  0.050 / 0.070
G18     218.5          25.6                7.3 +/-    3.02      14.2 +/-    3.02  0.180 / 0.150
G22     302.9          66.0                4.5 +/-    0.91       4.9 +/-    0.91  0.200 / 0.360
G23     288.7          22.0               -0.7 +/-    6.41      -1.5 +/-    6.41  0.140 / 0.000
G26     134.0          39.7                6.7 +/-    0.85       9.8 +/-    0.85  0.040 / 0.030
G31     41.6           55.0                3.5 +/-    0.41       4.2 +/-    0.41  0.040 / 0.030
G32     78.7           21.3                3.0 +/-    2.82       6.3 +/-    2.82  0.090 / 0.150