PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-22:57:50
G10     287.7          47.7                9.7 +/-    1.00      12.6 +/-    1.00  0.080 / 0.180
G15     47.7           34.5               10.1 +/-    0.74      16.2 +/-    0.74  0.070 / 0.210
G18     342.6          66.8                9.2 +/-    1.52       9.9 +/-    1.52  0.080 / 0.170
G20     67.1           21.7                8.8 +/-    1.63      18.6 +/-    1.63  0.150 / 0.190
G21     75.6           76.1               11.6 +/-    0.64      12.0 +/-    0.64  0.050 / 0.040
G24     105.6          23.7               12.2 +/-    1.59      24.5 +/-    1.59  0.050 / 0.040
G27     305.3          32.2               10.3 +/-    1.52      17.2 +/-    1.52  0.050 / 0.090
G29     166.9          10.2               13.5 +/-    0.84      37.4 +/-    0.84  0.060 / 0.100
G32     209.1          23.5               12.0 +/-    1.76      24.3 +/-    1.76  0.080 / 0.210