PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/17-01:27:50
G10     269.9          39.9               16.8 +/-    1.47      24.5 +/-    1.47  0.110 / 0.180
G13     40.7           16.2                8.8 +/-    2.84      21.2 +/-    2.84  0.110 / 0.200
G15     58.0           48.8                9.9 +/-    0.38      12.6 +/-    0.38  0.100 / 0.220
G16     275.2          11.3               14.2 +/-    4.50      38.5 +/-    4.50  0.080 / 0.210
G20     283.7          49.8               11.6 +/-    0.81      14.7 +/-    0.81  0.040 / 0.040
G21     6.8            73.1               13.0 +/-    0.68      13.5 +/-    0.68  0.040 / 0.050
G24     117.0          15.9               13.2 +/-    1.19      32.2 +/-    1.19  0.120 / 0.470
G27     317.4          20.8               10.5 +/-    3.66      22.7 +/-    3.66  0.130 / 0.420
G29     168.6          29.4               15.7 +/-    1.48      27.8 +/-    1.48  0.130 / 0.440
G32     204.2          13.1               22.1 +/-    2.23      57.3 +/-    2.23  0.150 / 0.540