PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/09-15:57:40
G01     42.0           17.2                9.5 +/-    0.73      22.5 +/-    0.73  0.050 / 0.110
G06     175.2          37.6               14.5 +/-    1.14      22.0 +/-    1.14  0.060 / 0.110
G13     241.0          23.2               12.3 +/-    1.09      25.0 +/-    1.09  0.190 / 0.320
G15     275.2          12.8               12.2 +/-    1.11      31.9 +/-    1.11  0.150 / 0.260
G17     5.5            70.0               13.6 +/-    0.79      14.4 +/-    0.79  0.030 / 0.050
G19     277.7          70.1               13.3 +/-    0.41      14.1 +/-    0.41  0.030 / 0.030
G24     317.7          16.5               10.7 +/-    3.12      25.7 +/-    3.12  0.090 / 0.180
G28     69.9           47.4               11.6 +/-    0.38      15.1 +/-    0.38  0.100 / 0.160
G30     154.5          31.2               12.0 +/-    0.73      20.6 +/-    0.73  0.120 / 0.300