PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/12-17:12:30
G02     32.8           55.4                8.7 +/-    1.04      10.3 +/-    1.04  0.030 / 0.040
G05     136.5          65.1               10.4 +/-    0.39      11.4 +/-    0.39  0.030 / 0.030
G06     56.6           11.4                7.1 +/-    2.11      19.1 +/-    2.11  0.030 / 0.040
G12     188.8          60.2               10.6 +/-    0.44      12.0 +/-    0.44  0.030 / 0.040
G19     102.1          10.7                9.8 +/-    2.78      26.9 +/-    2.78  0.050 / 0.040
G25     286.7          57.5               10.2 +/-    3.11      11.9 +/-    3.11  0.050 / 0.040
G29     310.1          30.6               10.2 +/-    1.81      17.7 +/-    1.81  0.050 / 0.130