PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/23-09:43:00
G03     233.0          65.3                5.9 +/-    0.75       6.4 +/-    0.75  0.090 / 0.100
G07     251.9          13.1                6.8 +/-    2.55      17.8 +/-    2.55  0.090 / 0.120
G09     306.9          23.7                4.6 +/-    2.15       9.3 +/-    2.15  0.210 / 0.200
G14     104.3          9.6                 4.2 +/-    2.44      11.7 +/-    2.44  0.150 / 0.280
G16     118.3          62.5                7.6 +/-    0.38       8.4 +/-    0.38  0.040 / 0.040
G22     190.2          49.8                5.7 +/-    0.49       7.2 +/-    0.49  0.040 / 0.050
G23     322.1          51.8                4.8 +/-    1.18       6.0 +/-    1.18  0.040 / 0.040
G26     63.4           50.0                5.0 +/-    1.18       6.3 +/-    1.18  0.040 / 0.040
G31     54.6           16.0                2.3 +/-    1.80       5.7 +/-    1.80  0.040 / 0.040