PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-23:57:30
G02     239.9          76.0               10.7 +/-    0.25      11.0 +/-    0.25  0.040 / 0.040
G05     171.1          16.2               17.4 +/-    1.30      42.0 +/-    1.30  0.050 / 0.040
G06     41.0           58.8               11.1 +/-    0.42      12.8 +/-    0.42  0.110 / 0.120
G12     321.6          51.3               11.0 +/-    0.57      13.7 +/-    0.57  0.090 / 0.130
G17     68.5           25.9                9.6 +/-    2.11      18.4 +/-    2.11  0.080 / 0.100
G19     55.2           40.3               11.9 +/-    1.25      17.2 +/-    1.25  0.080 / 0.120
G24     246.1          35.3               14.4 +/-    2.08      22.7 +/-    2.08  0.050 / 0.030
G25     316.5          10.8              -13.6 +/-   22.83     -37.4 +/-   22.83  0.050 / 0.030