PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-04:27:30
G01     244.4          31.8               10.3 +/-    1.80      17.4 +/-    1.80  0.100 / 0.120
G03     314.4          47.1                5.8 +/-    1.25       7.6 +/-    1.25  0.080 / 0.110
G14     67.5           35.8                5.4 +/-    0.62       8.5 +/-    0.62  0.080 / 0.110
G16     162.6          22.3               10.8 +/-    1.50      22.4 +/-    1.50  0.120 / 0.210
G22     295.3          70.6                7.6 +/-    1.08       8.0 +/-    1.08  0.040 / 0.050
G23     290.4          21.6                7.2 +/-    1.69      15.4 +/-    1.69  0.050 / 0.050
G26     134.6          41.8               10.1 +/-    0.97      14.3 +/-    0.97  0.080 / 0.270
G31     39.5           54.8                5.8 +/-    0.32       6.9 +/-    0.32  0.080 / 0.240
G32     81.2           21.5                5.4 +/-    0.75      11.4 +/-    0.75  0.040 / 0.030