PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-03:58:10
G10     247.1          23.5               12.6 +/-    2.79      25.4 +/-    2.79  0.160 / 0.490
G13     57.8           32.2                8.3 +/-    0.62      14.0 +/-    0.62  0.150 / 0.490
G15     95.8           57.9                9.9 +/-    0.39      11.4 +/-    0.39  0.050 / 0.070
G16     299.0          15.7                8.3 +/-    2.40      20.2 +/-    2.40  0.050 / 0.060
G20     277.1          61.0               10.7 +/-    0.92      12.1 +/-    0.92  0.050 / 0.150
G21     328.0          56.8                8.8 +/-    0.85      10.3 +/-    0.85  0.050 / 0.130
G26     270.5          17.3               11.3 +/-    2.61      26.5 +/-    2.61  0.030 / 0.040
G29     164.0          55.5               11.2 +/-    1.09      13.3 +/-    1.09  0.030 / 0.040