PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/08-01:28:00
G10     253.4          29.0               12.9 +/-    1.85      23.1 +/-    1.85  0.140 / 0.310
G13     50.7           28.0                9.5 +/-    2.18      17.4 +/-    2.18  0.160 / 0.350
G15     82.8           57.8               12.5 +/-    0.83      14.5 +/-    0.83  0.050 / 0.040
G16     291.2          15.6                9.9 +/-    1.74      24.2 +/-    1.74  0.050 / 0.050
G20     267.1          44.1               11.6 +/-    3.40      15.8 +/-    3.40  0.150 / 0.190
G21     336.6          61.9               11.8 +/-    0.54      13.2 +/-    0.54  0.160 / 0.270
G26     263.3          14.3               10.7 +/-    3.17      27.0 +/-    3.17  0.030 / 0.040
G29     166.1          47.3               12.2 +/-    0.92      16.0 +/-    0.92  0.030 / 0.040