PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/31-05:43:00
G01     238.5          27.8                5.5 +/-    1.07      10.1 +/-    1.07  0.040 / 0.040
G03     311.4          52.8                3.8 +/-    0.96       4.6 +/-    0.96  0.040 / 0.030
G14     73.5           32.1                3.0 +/-    0.95       5.0 +/-    0.95  0.070 / 0.130
G16     159.2          28.6                7.1 +/-    1.26      12.8 +/-    1.26  0.070 / 0.150
G22     276.4          74.7                4.5 +/-    0.60       4.7 +/-    0.60  0.080 / 0.220
G23     294.9          25.4                4.2 +/-    1.06       8.1 +/-    1.06  0.090 / 0.250
G26     126.8          46.7                6.1 +/-    1.10       8.0 +/-    1.10  0.060 / 0.190
G31     40.2           47.9                2.7 +/-    0.36       3.5 +/-    0.36  0.060 / 0.160
G32     86.5           17.2                3.6 +/-    1.10       8.4 +/-    1.10  0.060 / 0.170