PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/11-23:42:40
G08     316.2          15.1                9.8 +/-    3.69      24.4 +/-    3.69  0.080 / 0.050
G10     312.2          55.8               10.8 +/-    1.47      12.7 +/-    1.47  0.070 / 0.050
G14     213.4          22.9               16.1 +/-    1.85      33.0 +/-    1.85  0.030 / 0.030
G15     45.6           19.9               11.1 +/-    2.05      24.4 +/-    2.05  0.030 / 0.040
G18     19.5           63.5               12.0 +/-    0.76      13.2 +/-    0.76  0.070 / 0.100
G20     79.0           11.0               11.3 +/-    2.37      30.8 +/-    2.37  0.070 / 0.100
G21     121.2          65.2               13.3 +/-    1.14      14.5 +/-    1.14  0.210 / 0.410
G24     87.5           29.7               14.4 +/-    2.03      25.3 +/-    2.03  0.280 / 0.370
G27     286.2          37.9                9.1 +/-    0.96      13.8 +/-    0.96  0.060 / 0.080
G32     216.4          39.7               14.7 +/-    1.21      21.5 +/-    1.21  0.070 / 0.070