PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/08-04:57:50
G10     299.2          52.3                5.9 +/-    1.64       7.2 +/-    1.64  0.040 / 0.030
G15     46.0           27.8                3.7 +/-    1.48       6.8 +/-    1.48  0.050 / 0.030
G20     15.2           63.8                5.3 +/-    0.60       5.9 +/-    0.60  0.060 / 0.080
G21     99.1           74.0                7.7 +/-    0.93       8.0 +/-    0.93  0.060 / 0.100
G24     95.5           26.9                5.1 +/-    1.37       9.5 +/-    1.37  0.070 / 0.110
G27     298.8          34.9                6.2 +/-    0.64       9.8 +/-    0.64  0.070 / 0.100
G32     210.8          35.1                8.2 +/-    1.77      13.0 +/-    1.77  0.060 / 0.090