PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/18-19:57:30
G05     51.7           12.3                8.1 +/-    0.95      21.4 +/-    0.95  0.090 / 0.140
G10     242.2          19.3               11.8 +/-    0.79      26.5 +/-    0.79  0.110 / 0.200
G13     64.4           34.4               10.3 +/-    1.03      16.5 +/-    1.03  0.040 / 0.080
G15     118.7          57.2               11.1 +/-    0.92      12.9 +/-    0.92  0.040 / 0.060
G16     305.5          15.1                7.3 +/-    2.38      18.2 +/-    2.38  0.130 / 0.750
G20     256.9          43.5               10.2 +/-    1.40      14.1 +/-    1.40  0.120 / 0.580
G21     322.0          52.9               11.2 +/-    1.28      13.7 +/-    1.28  0.070 / 0.150
G26     278.0          19.0                8.3 +/-    1.06      18.7 +/-    1.06  0.070 / 0.130
G29     161.0          62.7               11.7 +/-    1.13      12.9 +/-    1.13  0.040 / 0.050