PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-01:57:50
G10     252.3          28.1               12.4 +/-    2.28      22.5 +/-    2.28  0.040 / 0.060
G13     51.8           28.7                7.2 +/-    0.96      13.0 +/-    0.96  0.030 / 0.050
G15     84.8           57.9                9.4 +/-    0.52      10.8 +/-    0.52  0.060 / 0.170
G16     292.5          15.6                6.5 +/-    2.65      15.9 +/-    2.65  0.070 / 0.190
G20     268.7          47.6               10.2 +/-    0.89      13.3 +/-    0.89  0.150 / 0.650
G21     335.1          61.0                9.2 +/-    0.38      10.3 +/-    0.38  0.190 / 0.680
G26     264.4          14.8               10.1 +/-    1.73      25.3 +/-    1.73  0.030 / 0.060
G29     165.8          48.6               10.5 +/-    1.00      13.5 +/-    1.00  0.030 / 0.060