PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-21:28:10
G10     273.5          41.9               11.1 +/-    1.51      15.7 +/-    1.51  0.090 / 0.050
G13     39.5           13.6                9.1 +/-    2.51      23.5 +/-    2.51  0.090 / 0.060
G15     57.1           49.5               11.0 +/-    0.65      13.9 +/-    0.65  0.150 / 0.140
G20     309.1          62.6               11.2 +/-    0.90      12.5 +/-    0.90  0.130 / 0.150
G21     19.4           75.0               12.7 +/-    0.78      13.1 +/-    0.78  0.080 / 0.070
G24     113.1          17.7               13.2 +/-    0.76      30.8 +/-    0.76  0.130 / 0.070
G27     316.3          22.4               10.6 +/-    1.18      22.0 +/-    1.18  0.340 / 0.460
G29     168.5          25.8               12.6 +/-    0.76      24.2 +/-    0.76  0.320 / 0.350
G32     204.9          15.4               16.4 +/-    2.82      40.5 +/-    2.82  0.120 / 0.180