PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/23-21:27:50
G01     99.3           28.6               12.5 +/-    0.99      22.5 +/-    0.99  0.040 / 0.050
G07     118.4          47.4               11.5 +/-    0.35      15.0 +/-    0.35  0.050 / 0.050
G08     41.5           13.0                7.9 +/-    2.45      20.7 +/-    2.45  0.210 / 0.470
G11     77.1           42.0               11.7 +/-    1.03      16.4 +/-    1.03  0.110 / 0.220
G13     303.0          33.4                9.4 +/-    2.69      15.4 +/-    2.69  0.080 / 0.130
G17     208.0          46.6               13.6 +/-    0.75      17.9 +/-    0.75  0.090 / 0.120
G18     69.6           23.7                9.9 +/-    1.79      19.9 +/-    1.79  0.060 / 0.060
G19     210.7          19.3               10.0 +/-   13.08      22.3 +/-   13.08  0.060 / 0.050
G28     323.9          60.9                9.9 +/-    0.77      11.1 +/-    0.77  0.040 / 0.030
G30     67.0           79.6               11.7 +/-    0.34      11.9 +/-    0.34  0.030 / 0.020