PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/06-14:12:40
G01     39.9           14.1               11.6 +/-    1.37      29.4 +/-    1.37  0.130 / 0.330
G06     174.9          41.6               18.0 +/-    0.74      25.5 +/-    0.74  0.170 / 0.310
G13     237.6          20.4               13.5 +/-    1.55      29.4 +/-    1.55  0.060 / 0.100
G15     270.2          11.5               11.8 +/-    1.98      31.9 +/-    1.98  0.060 / 0.120
G17     12.4           66.5               12.8 +/-    0.61      13.8 +/-    0.61  0.130 / 0.330
G19     291.7          71.6               14.0 +/-    0.61      14.6 +/-    0.61  0.080 / 0.300
G24     316.4          19.9                9.2 +/-    2.48      20.2 +/-    2.48  0.100 / 0.180
G28     75.6           45.2               14.2 +/-    0.66      19.1 +/-    0.66  0.090 / 0.140
G30     155.5          26.4               16.3 +/-    0.95      30.8 +/-    0.95  0.060 / 0.070