PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/20-00:27:30
G02     20.2           65.6                9.4 +/-    0.56      10.2 +/-    0.56  0.130 / 0.300
G05     153.1          50.5               14.5 +/-    1.39      18.2 +/-    1.39  0.120 / 0.270
G06     47.5           25.5               10.3 +/-    1.66      19.9 +/-    1.66  0.040 / 0.030
G12     236.0          79.3               10.2 +/-    0.41      10.3 +/-    0.41  0.030 / 0.030
G19     88.7           19.0               12.0 +/-    1.11      27.1 +/-    1.11  0.030 / 0.060
G24     216.7          11.6               18.0 +/-    1.92      48.6 +/-    1.92  0.030 / 0.060
G25     311.2          42.7               10.9 +/-    1.41      15.1 +/-    1.41  0.030 / 0.050
G29     297.6          18.0               10.5 +/-    1.21      24.3 +/-    1.21  0.040 / 0.050