PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/31-17:27:50
G02     16.7           66.5                9.9 +/-    0.40      10.7 +/-    0.40  0.030 / 0.060
G05     154.2          51.6               13.3 +/-    0.48      16.5 +/-    0.48  0.030 / 0.050
G06     49.0           22.0                7.7 +/-    1.53      16.2 +/-    1.53  0.050 / 0.060
G12     202.2          76.0               11.0 +/-    0.46      11.3 +/-    0.46  0.060 / 0.060
G19     89.6           19.4               10.4 +/-    2.38      23.3 +/-    2.38  0.020 / 0.020
G25     308.5          46.5               10.0 +/-    1.49      13.2 +/-    1.49  0.020 / 0.030
G29     298.9          19.1                9.5 +/-    1.06      21.3 +/-    1.06  0.130 / 0.120