PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/18-00:57:50
G10     289.3          49.7                8.6 +/-    3.13      10.9 +/-    3.13  0.040 / 0.030
G15     47.5           33.4                7.5 +/-    1.73      12.3 +/-    1.73  0.040 / 0.030
G20     335.5          65.0                9.0 +/-    0.67       9.8 +/-    0.67  0.080 / 0.100
G21     67.7           77.1               10.0 +/-    0.35      10.2 +/-    0.35  0.070 / 0.110
G24     105.2          23.7               10.5 +/-    1.06      21.2 +/-    1.06  0.140 / 0.130
G27     307.7          30.6                8.4 +/-    1.04      14.5 +/-    1.04  0.110 / 0.070
G29     167.6          13.1                8.7 +/-    1.83      22.7 +/-    1.83  0.060 / 0.060
G32     208.1          24.3               12.3 +/-    1.98      24.4 +/-    1.98  0.110 / 0.070