PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/22-21:28:10
G10     292.4          50.2                8.7 +/-    0.99      11.0 +/-    0.99  0.060 / 0.110
G15     47.8           36.2                7.4 +/-    0.58      11.5 +/-    0.58  0.070 / 0.110
G20     343.5          65.4                7.5 +/-    1.15       8.1 +/-    1.15  0.040 / 0.040
G21     83.4           75.8                9.6 +/-    0.83       9.9 +/-    0.83  0.050 / 0.060
G24     98.6           24.9                9.1 +/-    1.52      17.9 +/-    1.52  0.070 / 0.130
G27     305.1          31.7                8.8 +/-    0.87      14.8 +/-    0.87  0.060 / 0.150
G29     168.4          11.3               12.9 +/-    2.73      35.0 +/-    2.73  0.040 / 0.070
G32     208.9          29.4               14.1 +/-    1.79      25.1 +/-    1.79  0.050 / 0.070