PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/17-18:58:00
G10     265.6          37.6               10.2 +/-    1.43      15.4 +/-    1.43  0.140 / 0.220
G13     42.5           19.1                9.5 +/-    1.09      21.4 +/-    1.09  0.120 / 0.160
G15     63.9           53.1               10.3 +/-    0.54      12.5 +/-    0.54  0.040 / 0.050
G16     280.3          12.6                7.5 +/-    1.71      19.8 +/-    1.71  0.050 / 0.040
G20     295.0          59.7                9.8 +/-    0.97      11.1 +/-    0.97  0.150 / 0.350
G21     2.1            71.3               10.6 +/-    0.53      11.1 +/-    0.53  0.190 / 0.360
G24     118.5          13.8               12.6 +/-    1.62      32.2 +/-    1.62  0.130 / 0.270
G27     319.9          16.5                7.7 +/-    1.44      18.4 +/-    1.44  0.140 / 0.350
G29     167.5          32.7               11.3 +/-    1.06      18.7 +/-    1.06  0.080 / 0.170