PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/19-19:42:50
G08     300.8          22.0               18.5 +/-    1.24      38.7 +/-    1.24  0.060 / 0.090
G10     348.5          62.0                8.3 +/-    0.61       9.3 +/-    0.61  0.060 / 0.120
G14     223.8          39.9               15.6 +/-    1.59      22.7 +/-    1.59  0.050 / 0.080
G18     54.2           54.3                9.1 +/-    0.67      11.0 +/-    0.67  0.050 / 0.110
G21     141.0          43.9               13.4 +/-    1.32      18.3 +/-    1.32  0.040 / 0.060
G24     65.2           29.2                9.0 +/-    0.56      16.0 +/-    0.56  0.040 / 0.080
G27     261.7          35.0               11.1 +/-    1.62      17.5 +/-    1.62  0.060 / 0.110
G32     232.8          59.0               12.7 +/-    0.91      14.6 +/-    0.91  0.050 / 0.120