PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-22:43:00
G02     67.6           27.7                7.8 +/-    1.14      14.3 +/-    1.14  0.030 / 0.030
G05     48.5           53.8                6.6 +/-    0.41       8.0 +/-    0.41  0.030 / 0.040
G12     182.0          19.3               14.6 +/-    2.99      32.7 +/-    2.99  0.060 / 0.080
G13     119.8          23.2               12.8 +/-    1.72      26.2 +/-    1.72  0.060 / 0.090
G15     159.2          20.4               15.8 +/-    1.87      34.5 +/-    1.87  0.100 / 0.220
G20     216.4          75.0               10.9 +/-    0.69      11.2 +/-    0.69  0.120 / 0.300
G21     280.6          24.5               10.8 +/-    1.40      21.3 +/-    1.40  0.080 / 0.160
G25     216.4          40.1               13.4 +/-    0.83      19.4 +/-    0.83  0.090 / 0.180
G29     338.5          68.3                9.7 +/-    0.65      10.4 +/-    0.65  0.030 / 0.040