PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/06-04:57:40
G10     293.8          50.5                7.4 +/-    2.30       9.2 +/-    2.30  0.030 / 0.030
G15     46.7           31.0                4.9 +/-    1.35       8.3 +/-    1.35  0.050 / 0.030
G20     9.8            64.6                6.7 +/-    0.82       7.3 +/-    0.82  0.070 / 0.100
G21     86.0           75.9                8.0 +/-    0.67       8.2 +/-    0.67  0.060 / 0.090
G24     99.5           25.5                6.5 +/-    0.97      12.6 +/-    0.97  0.090 / 0.120
G27     302.7          33.3                5.5 +/-    1.82       9.0 +/-    1.82  0.070 / 0.110
G29     168.6          10.4                7.6 +/-    3.24      21.2 +/-    3.24  0.050 / 0.070
G32     209.3          31.4                9.4 +/-    1.60      16.0 +/-    1.60  0.060 / 0.080