PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/06-18:57:30
G03     236.3          68.8                9.1 +/-    0.74       9.7 +/-    0.74  0.180 / 0.470
G09     302.9          17.8                7.9 +/-    1.15      18.3 +/-    1.15  0.160 / 0.340
G14     99.2           14.1                8.6 +/-    2.20      21.9 +/-    2.20  0.030 / 0.040
G16     134.6          57.1               10.8 +/-    0.67      12.6 +/-    0.67  0.040 / 0.030
G22     194.2          55.2               10.2 +/-    0.58      12.1 +/-    0.58  0.030 / 0.040
G23     317.3          46.9                8.5 +/-    1.05      11.2 +/-    1.05  0.030 / 0.040
G26     77.6           55.6                9.3 +/-    1.51      11.0 +/-    1.51  0.170 / 0.150
G31     50.7           23.7                6.8 +/-    3.05      13.8 +/-    3.05  0.090 / 0.150