PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/17-15:43:00
G01     39.6           14.3                7.7 +/-    2.04      19.5 +/-    2.04  0.270 / 0.310
G06     173.7          40.8               11.8 +/-    1.05      17.0 +/-    1.05  0.270 / 0.440
G13     235.0          21.4               11.5 +/-    1.48      24.3 +/-    1.48  0.040 / 0.060
G15     269.2          11.6                9.7 +/-    2.25      26.1 +/-    2.25  0.060 / 0.060
G17     357.0          71.1               10.7 +/-    0.45      11.2 +/-    0.45  0.030 / 0.030
G19     284.5          70.9                9.6 +/-    0.55      10.1 +/-    0.55  0.030 / 0.050
G24     315.9          20.0                7.0 +/-    2.35      15.5 +/-    2.35  0.040 / 0.040
G28     67.5           50.5               10.7 +/-    1.37      13.4 +/-    1.37  0.030 / 0.040
G30     154.6          24.8               10.2 +/-    2.11      20.1 +/-    2.11  0.060 / 0.080