PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/29-17:28:10
G02     211.6          50.9               13.4 +/-    0.94      16.7 +/-    0.94  0.070 / 0.060
G06     78.6           77.5               12.2 +/-    0.62      12.5 +/-    0.62  0.080 / 0.060
G12     317.2          33.4                9.9 +/-    1.58      16.2 +/-    1.58  0.090 / 0.080
G17     51.9           36.4               10.5 +/-    1.08      16.2 +/-    1.08  0.060 / 0.110
G19     26.1           56.0               11.7 +/-    1.22      13.8 +/-    1.22  0.030 / 0.020
G24     273.3          42.9               11.6 +/-    3.18      16.1 +/-    3.18  0.030 / 0.020
G28     117.6          19.0               12.2 +/-    1.63      27.5 +/-    1.63  0.060 / 0.030