PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/19-04:12:50
G08     273.0          20.3                6.1 +/-    2.23      13.3 +/-    2.23  0.060 / 0.150
G10     49.9           60.4                5.0 +/-    0.66       5.6 +/-    0.66  0.080 / 0.130
G14     252.9          60.1                6.9 +/-    0.86       7.8 +/-    0.86  0.050 / 0.060
G18     315.0          26.6                3.7 +/-    2.41       6.9 +/-    2.41  0.050 / 0.060
G20     76.3           54.9                8.7 +/-    0.36      10.4 +/-    0.36  0.090 / 0.220
G21     153.8          21.9                7.5 +/-    1.75      15.8 +/-    1.75  0.090 / 0.220
G24     41.7           13.2                4.0 +/-    1.64      10.3 +/-    1.64  0.080 / 0.160
G27     236.4          19.9                9.3 +/-    1.31      20.5 +/-    1.31  0.100 / 0.120
G31     177.9          26.1                7.3 +/-    1.26      13.9 +/-    1.26  0.030 / 0.030
G32     323.8          76.3                6.5 +/-    0.95       6.7 +/-    0.95  0.030 / 0.030