PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/19-16:57:40
G02     62.5           30.6                7.3 +/-    0.95      12.7 +/-    0.95  0.040 / 0.040
G05     53.3           59.0                7.3 +/-    0.40       8.3 +/-    0.40  0.030 / 0.050
G12     182.5          27.3                9.7 +/-    1.47      18.0 +/-    1.47  0.090 / 0.270
G13     122.7          18.1               10.1 +/-    2.24      23.3 +/-    2.24  0.110 / 0.280
G15     161.3          16.3               11.5 +/-    2.21      27.9 +/-    2.21  0.090 / 0.460
G21     275.3          19.4                8.0 +/-    2.11      17.9 +/-    2.11  0.100 / 0.490
G25     231.3          48.7               10.1 +/-    2.79      13.0 +/-    2.79  0.060 / 0.120
G29     331.6          58.6                6.4 +/-    0.90       7.3 +/-    0.90  0.050 / 0.100