PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/29-00:42:40
G02     253.4          79.1                9.2 +/-    0.50       9.3 +/-    0.50  0.040 / 0.050
G05     169.6          19.5               14.2 +/-    1.72      31.6 +/-    1.72  0.050 / 0.050
G06     40.2           55.3                7.7 +/-    0.62       9.1 +/-    0.62  0.060 / 0.250
G12     321.4          54.8                8.2 +/-    0.66       9.8 +/-    0.66  0.060 / 0.190
G17     71.4           24.1                8.2 +/-    0.67      16.4 +/-    0.67  0.080 / 0.210
G19     59.2           37.8                7.7 +/-    0.84      11.7 +/-    0.84  0.100 / 0.310
G24     242.4          33.2               12.6 +/-    0.78      20.7 +/-    0.78  0.110 / 0.130
G25     317.1          13.9                7.5 +/-    1.52      19.2 +/-    1.52  0.120 / 0.130