PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/23-08:43:00
G03     232.1          66.1                7.6 +/-    0.92       8.2 +/-    0.92  0.040 / 0.060
G09     306.2          22.7                5.5 +/-    1.05      11.3 +/-    1.05  0.050 / 0.050
G14     102.0          13.9                3.9 +/-    2.98      10.1 +/-    2.98  0.110 / 0.360
G16     113.5          61.4                7.7 +/-    0.46       8.6 +/-    0.46  0.130 / 0.280
G22     192.6          51.3                8.0 +/-    0.62       9.9 +/-    0.62  0.040 / 0.060
G23     322.9          52.7                6.0 +/-    0.48       7.4 +/-    0.48  0.050 / 0.040
G26     61.8           47.9                6.2 +/-    0.92       8.1 +/-    0.92  0.040 / 0.040
G31     54.8           14.9                3.6 +/-    3.19       8.9 +/-    3.19  0.040 / 0.030