PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/01-01:57:30
G10     254.0          29.4               13.2 +/-    1.35      23.4 +/-    1.35  0.130 / 0.350
G13     50.2           27.6                7.7 +/-    1.82      14.1 +/-    1.82  0.130 / 0.520
G15     81.1           57.5               11.1 +/-    0.85      12.9 +/-    0.85  0.050 / 0.040
G16     290.6          15.4                9.7 +/-    1.23      23.8 +/-    1.23  0.040 / 0.040
G20     270.6          48.3               11.6 +/-    3.42      15.0 +/-    3.42  0.050 / 0.050
G21     337.5          62.3               10.8 +/-    0.68      12.0 +/-    0.68  0.040 / 0.050
G26     262.7          14.0               10.6 +/-    3.07      27.0 +/-    3.07  0.110 / 0.270
G29     166.2          46.5               12.2 +/-    0.63      16.1 +/-    0.63  0.060 / 0.190