PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/30-05:13:10
G10     286.0          47.5                4.6 +/-    1.53       6.0 +/-    1.53  0.040 / 0.050
G15     48.3           35.8                3.5 +/-    1.02       5.5 +/-    1.02  0.040 / 0.040
G20     6.9            65.1                3.3 +/-    0.53       3.6 +/-    0.53  0.090 / 0.130
G21     60.9           77.4                4.8 +/-    0.68       5.0 +/-    0.68  0.060 / 0.100
G24     105.5          23.0                4.9 +/-    1.10      10.1 +/-    1.10  0.090 / 0.220
G27     308.1          30.2                5.7 +/-    2.77       9.9 +/-    2.77  0.090 / 0.190
G29     168.9          15.7                5.9 +/-    1.22      14.5 +/-    1.22  0.050 / 0.080
G32     207.3          25.8                5.3 +/-    1.47      10.1 +/-    1.47  0.040 / 0.080