PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/04-01:27:30
G10     247.2          23.8               12.4 +/-    2.45      24.9 +/-    2.45  0.140 / 0.560
G13     57.5           32.0               10.0 +/-    0.67      16.8 +/-    0.67  0.130 / 0.590
G15     98.0           58.5               11.8 +/-    0.33      13.6 +/-    0.33  0.080 / 0.180
G16     298.5          15.9                8.0 +/-    2.15      19.4 +/-    2.15  0.060 / 0.180
G20     260.3          41.3               12.4 +/-    0.89      17.7 +/-    0.89  0.050 / 0.060
G21     327.9          56.7                9.9 +/-    0.98      11.6 +/-    0.98  0.050 / 0.060
G26     270.2          17.2               12.4 +/-    2.70      29.2 +/-    2.70  0.030 / 0.050
G29     164.1          55.6               12.9 +/-    0.79      15.2 +/-    0.79  0.030 / 0.050