PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/16-16:57:50
G02     33.7           54.7                8.0 +/-    0.43       9.5 +/-    0.43  0.030 / 0.040
G05     135.7          65.5                8.3 +/-    0.92       9.1 +/-    0.92  0.030 / 0.040
G06     57.0           11.0                7.2 +/-    1.69      19.7 +/-    1.69  0.200 / 0.250
G12     188.8          59.7                8.1 +/-    1.00       9.2 +/-    1.00  0.140 / 0.300
G19     102.6          10.3                7.3 +/-    1.67      20.2 +/-    1.67  0.030 / 0.050
G25     285.3          57.9                8.5 +/-    1.15       9.8 +/-    1.15  0.030 / 0.040
G29     310.5          31.1                6.0 +/-    1.05      10.3 +/-    1.05  0.030 / 0.060