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                5.2 +/-    0.51       5.6 +/-    0.51  0.040 / 0.050
G09     303.7          19.4                3.0 +/-    1.01       6.6 +/-    1.01  0.050 / 0.040
G14     98.5           16.8                4.2 +/-    2.12       9.9 +/-    2.12  0.110 / 0.270
G16     122.6          58.9                6.5 +/-    0.41       7.4 +/-    0.41  0.110 / 0.270
G22     194.8          55.6                6.1 +/-    0.82       7.3 +/-    0.82  0.030 / 0.040
G23     319.7          49.6                4.8 +/-    1.07       6.1 +/-    1.07  0.040 / 0.040
G26     67.5           50.3                6.3 +/-    0.77       7.9 +/-    0.77  0.050 / 0.060
G31     52.6           18.0                2.3 +/-    3.13       5.3 +/-    3.13  0.070 / 0.070