PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/18-20:57:40
G10     266.2          37.9               11.3 +/-    1.52      17.0 +/-    1.52  0.060 / 0.030
G13     42.2           18.7                8.9 +/-    3.14      20.2 +/-    3.14  0.040 / 0.030
G15     64.7           54.1               10.2 +/-    0.64      12.2 +/-    0.64  0.210 / 0.560
G16     279.2          12.5                8.8 +/-    2.10      23.3 +/-    2.10  0.170 / 0.440
G20     295.9          59.9               10.0 +/-    1.18      11.3 +/-    1.18  0.170 / 0.200
G21     1.1            71.3               10.8 +/-    0.83      11.3 +/-    0.83  0.190 / 0.170
G24     118.7          14.0               12.5 +/-    3.26      31.9 +/-    3.26  0.150 / 0.290
G27     319.5          17.3               10.0 +/-    2.62      23.4 +/-    2.62  0.170 / 0.310
G29     167.9          32.6               11.2 +/-    1.84      18.7 +/-    1.84  0.220 / 0.340