PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-01:13:10
G02     50.8           39.4                9.9 +/-    1.98      14.5 +/-    1.98  0.040 / 0.050
G05     79.1           67.5               11.7 +/-    0.52      12.5 +/-    0.52  0.040 / 0.050
G12     189.1          47.1               13.1 +/-    0.64      17.2 +/-    0.64  0.150 / 0.320
G21     263.1          11.1               -3.8 +/-   14.78     -10.5 +/-   14.78  0.050 / 0.070
G25     256.0          57.8               10.1 +/-    1.33      11.7 +/-    1.33  0.060 / 0.090
G29     323.6          47.4               11.2 +/-    0.88      14.6 +/-    0.88  0.040 / 0.060