PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-04:58:10
G01     232.0          22.4               10.2 +/-    2.29      21.3 +/-    2.29  0.110 / 0.300
G03     303.9          59.9                5.7 +/-    1.27       6.5 +/-    1.27  0.110 / 0.260
G14     80.6           27.5                3.7 +/-    0.88       6.8 +/-    0.88  0.080 / 0.170
G16     155.7          36.0                8.3 +/-    1.09      12.9 +/-    1.09  0.080 / 0.170
G22     244.5          75.3                6.7 +/-    0.84       6.9 +/-    0.84  0.030 / 0.040
G23     300.6          30.5                6.3 +/-    1.10      11.0 +/-    1.10  0.030 / 0.040
G26     116.9          51.7                6.7 +/-    0.58       8.3 +/-    0.58  0.070 / 0.130
G31     41.7           41.3                4.7 +/-    0.46       6.6 +/-    0.46  0.070 / 0.120
G32     92.6           13.0                5.0 +/-    1.12      13.0 +/-    1.12  0.030 / 0.040