PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/09-05:28:00
G10     251.2          27.0                8.2 +/-    1.60      15.4 +/-    1.60  0.290 / 0.740
G13     53.1           29.7                4.9 +/-    0.92       8.7 +/-    0.92  0.300 / 0.650
G15     84.4           57.1                4.6 +/-    0.85       5.4 +/-    0.85  0.100 / 0.140
G16     294.3          15.5                3.0 +/-    2.02       7.3 +/-    2.02  0.090 / 0.120
G20     313.0          70.5                4.6 +/-    0.66       4.8 +/-    0.66  0.030 / 0.050
G21     334.3          60.6                4.8 +/-    0.64       5.5 +/-    0.64  0.030 / 0.060
G26     265.8          15.3                6.3 +/-    2.41      15.5 +/-    2.41  0.030 / 0.050
G29     165.3          49.5                6.2 +/-    0.66       7.9 +/-    0.66  0.040 / 0.050