PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/14-08:12:40
G03     233.3          65.3                5.6 +/-    0.91       6.1 +/-    0.91  0.120 / 0.130
G07     251.7          12.6                6.5 +/-    5.13      17.2 +/-    5.13  0.110 / 0.110
G09     307.2          24.7                4.1 +/-    1.95       8.2 +/-    1.95  0.050 / 0.050
G14     104.3          9.6                 4.6 +/-    2.61      12.8 +/-    2.61  0.040 / 0.040
G16     120.2          62.5                7.5 +/-    0.50       8.4 +/-    0.50  0.040 / 0.050
G22     191.3          50.4                5.7 +/-    0.60       7.2 +/-    0.60  0.040 / 0.040
G23     321.8          51.6                4.7 +/-    0.83       5.8 +/-    0.83  0.140 / 0.270
G26     64.2           50.7                4.8 +/-    1.07       6.0 +/-    1.07  0.210 / 0.180
G31     54.4           16.7                1.8 +/-    1.78       4.3 +/-    1.78  0.050 / 0.040