PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/06-07:12:40
G10     299.0          52.2                7.4 +/-    0.93       9.1 +/-    0.93  0.040 / 0.050
G15     45.9           26.8                3.8 +/-    1.14       7.1 +/-    1.14  0.040 / 0.060
G20     47.2           51.8                5.7 +/-    0.41       7.1 +/-    0.41  0.080 / 0.080
G21     99.8           73.6                6.6 +/-    0.44       6.8 +/-    0.44  0.080 / 0.100
G24     96.1           26.9                9.1 +/-    0.78      17.0 +/-    0.78  0.070 / 0.120
G27     298.6          35.0                7.9 +/-    1.68      12.5 +/-    1.68  0.090 / 0.120
G32     210.9          34.9               10.1 +/-    1.33      16.0 +/-    1.33  0.040 / 0.040