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                7.2 +/-    0.82       8.0 +/-    0.82  0.080 / 0.180
G07     253.4          13.9                6.4 +/-    1.30      16.4 +/-    1.30  0.090 / 0.200
G09     308.7          26.8                2.3 +/-    0.96       4.4 +/-    0.96  0.080 / 0.130
G16     116.1          63.8                8.9 +/-    0.86       9.8 +/-    0.86  0.080 / 0.110
G22     190.7          48.2                6.8 +/-    1.43       8.8 +/-    1.43  0.040 / 0.040
G23     323.6          53.5                6.1 +/-    0.77       7.4 +/-    0.77  0.030 / 0.050
G26     61.6           49.8                6.7 +/-    0.55       8.4 +/-    0.55  0.040 / 0.060
G31     55.6           15.6                2.3 +/-    1.35       5.7 +/-    1.35  0.040 / 0.080