PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/30-07:12:40
G03     228.0          63.7                7.8 +/-    1.90       8.6 +/-    1.90  0.080 / 0.130
G07     253.4          13.9                7.7 +/-    4.00      19.7 +/-    4.00  0.080 / 0.140
G09     308.7          26.8                4.3 +/-    2.02       8.1 +/-    2.02  0.080 / 0.410
G16     116.1          63.8                8.9 +/-    0.25       9.8 +/-    0.25  0.060 / 0.360
G22     190.7          48.2                7.7 +/-    0.89       9.9 +/-    0.89  0.100 / 0.210
G23     323.6          53.5                6.1 +/-    0.78       7.4 +/-    0.78  0.080 / 0.150
G26     61.6           49.8                6.9 +/-    0.69       8.8 +/-    0.69  0.040 / 0.050
G31     55.6           15.6                3.7 +/-    2.40       9.2 +/-    2.40  0.040 / 0.040