PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/17-08:58:00
G03     242.7          68.4                5.9 +/-    1.20       6.3 +/-    1.20  0.050 / 0.050
G09     303.7          19.4                4.0 +/-    1.87       9.0 +/-    1.87  0.040 / 0.070
G14     98.5           16.8                4.3 +/-    1.94      10.3 +/-    1.94  0.040 / 0.050
G16     122.6          58.9                8.7 +/-    0.57      10.0 +/-    0.57  0.040 / 0.060
G22     194.8          55.6                6.4 +/-    1.09       7.6 +/-    1.09  0.110 / 0.430
G23     319.7          49.6                2.8 +/-    0.78       3.5 +/-    0.78  0.130 / 0.550
G26     67.5           50.3                8.0 +/-    0.30      10.1 +/-    0.30  0.050 / 0.060
G31     52.6           18.0                1.3 +/-    0.82       3.1 +/-    0.82  0.050 / 0.060