PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/29-16:27:40
G02     22.2           64.3               17.0 +/-    0.37      18.7 +/-    0.37  0.060 / 0.060
G05     157.9          50.3               18.0 +/-    1.20      22.7 +/-    1.20  0.070 / 0.060
G06     48.4           25.2               13.2 +/-    1.01      25.8 +/-    1.01  0.030 / 0.040
G12     228.1          77.5               12.4 +/-    0.97      12.6 +/-    0.97  0.030 / 0.040
G19     92.7           14.4               12.5 +/-    0.82      31.5 +/-    0.82  0.230 / 0.390
G20     197.7          16.5               15.9 +/-    1.23      38.2 +/-    1.23  0.200 / 0.490
G24     216.4          10.3               16.8 +/-    1.73      46.5 +/-    1.73  0.060 / 0.120
G25     307.2          48.4               14.9 +/-    1.08      19.1 +/-    1.08  0.060 / 0.110
G29     302.1          24.5               13.2 +/-    1.87      26.1 +/-    1.87  0.120 / 0.230