PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/13-16:57:50
G10     261.2          35.0                9.1 +/-    1.34      14.4 +/-    1.34  0.040 / 0.040
G13     44.8           22.1                8.1 +/-    2.87      16.9 +/-    2.87  0.040 / 0.030
G15     68.8           54.7                7.7 +/-    0.78       9.2 +/-    0.78  0.130 / 0.550
G16     285.0          13.7                5.3 +/-    1.66      13.6 +/-    1.66  0.220 / 0.550
G20     287.5          57.6                8.0 +/-    1.84       9.3 +/-    1.84  0.330 / 0.200
G21     355.5          69.1                8.8 +/-    0.92       9.3 +/-    0.92  0.240 / 0.210
G24     121.3          11.4               10.9 +/-    2.33      29.6 +/-    2.33  0.260 / 0.310
G27     321.5          12.7                4.1 +/-    3.87      10.9 +/-    3.87  0.190 / 0.300
G29     166.5          36.6                8.4 +/-    0.55      12.9 +/-    0.55  0.040 / 0.030