PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/20-21:42:50
G10     259.5          34.9               10.0 +/-    2.42      15.9 +/-    2.42  0.040 / 0.060
G13     45.6           22.7                7.8 +/-    0.93      16.0 +/-    0.93  0.050 / 0.060
G15     69.3           54.2               10.7 +/-    0.58      12.9 +/-    0.58  0.130 / 0.300
G20     284.9          56.7               10.5 +/-    0.92      12.3 +/-    0.92  0.170 / 0.260
G21     346.5          66.1                8.2 +/-    0.69       8.9 +/-    0.69  0.060 / 0.270
G26     259.5          11.4               10.8 +/-    1.94      29.4 +/-    1.94  0.070 / 0.260
G27     321.6          12.3                6.9 +/-    3.23      18.2 +/-    3.23  0.030 / 0.050
G29     165.9          39.5               12.4 +/-    0.55      18.1 +/-    0.55  0.030 / 0.050