PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/14-04:12:30
G10     253.0          29.8               10.8 +/-    0.70      19.0 +/-    0.70  0.050 / 0.050
G13     50.8           27.5                7.1 +/-    1.37      13.2 +/-    1.37  0.050 / 0.040
G15     78.9           56.0                8.3 +/-    0.18       9.8 +/-    0.18  0.070 / 0.130
G16     296.0          14.5                9.4 +/-    2.46      23.6 +/-    2.46  0.090 / 0.140
G20     274.0          52.6               10.9 +/-    0.62      13.3 +/-    0.62  0.090 / 0.300
G21     339.3          62.6                8.8 +/-    0.92       9.7 +/-    0.92  0.080 / 0.330
G26     267.6          14.3                9.8 +/-    1.68      24.9 +/-    1.68  0.070 / 0.170
G29     162.8          43.8               10.4 +/-    1.27      14.3 +/-    1.27  0.070 / 0.170