PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/13-18:58:00
G10     289.7          50.1               10.5 +/-    3.13      13.2 +/-    3.13  0.070 / 0.100
G15     47.3           32.7                8.7 +/-    0.91      14.3 +/-    0.91  0.060 / 0.090
G20     341.4          65.4               10.7 +/-    0.72      11.6 +/-    0.72  0.040 / 0.030
G21     68.6           76.9               11.3 +/-    0.49      11.6 +/-    0.49  0.040 / 0.040
G24     106.3          23.8               11.7 +/-    1.71      23.4 +/-    1.71  0.090 / 0.150
G27     307.3          31.1               10.4 +/-    0.99      17.9 +/-    0.99  0.110 / 0.190
G29     168.2          14.4                9.4 +/-    2.24      23.6 +/-    2.24  0.090 / 0.110
G32     207.5          26.5               10.3 +/-    0.96      19.5 +/-    0.96  0.060 / 0.090