PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/19-00:58:10
G10     260.1          33.9               12.7 +/-    2.13      20.6 +/-    2.13  0.110 / 0.180
G13     45.5           23.2                8.6 +/-    0.95      17.5 +/-    0.95  0.100 / 0.170
G15     70.3           55.2               10.1 +/-    0.33      12.0 +/-    0.33  0.120 / 0.220
G16     284.0          14.3               10.2 +/-    2.18      26.0 +/-    2.18  0.170 / 0.290
G20     271.4          43.0               10.2 +/-    0.99      14.2 +/-    0.99  0.040 / 0.060
G21     347.0          66.9                8.8 +/-    0.86       9.5 +/-    0.86  0.040 / 0.050
G24     124.6          10.4               -9.9 +/-   39.90     -27.3 +/-   39.90  0.170 / 0.000
G26     256.9          11.0               12.6 +/-    2.81      34.5 +/-    2.81  0.150 / 0.400
G27     321.2          13.4                9.1 +/-    3.87      23.5 +/-    3.87  0.080 / 0.110
G29     167.5          39.4               12.6 +/-    1.53      18.5 +/-    1.53  0.100 / 0.120