PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/01-17:42:40
G08     305.1          21.5                7.4 +/-    1.72      15.8 +/-    1.72  0.090 / 0.140
G10     339.5          61.0                8.5 +/-    0.86       9.5 +/-    0.86  0.060 / 0.110
G14     219.7          34.3               10.8 +/-    0.82      17.4 +/-    0.82  0.040 / 0.060
G20     43.7           59.0               10.1 +/-    0.66      11.5 +/-    0.66  0.050 / 0.060
G21     137.3          51.3               12.1 +/-    0.55      15.0 +/-    0.55  0.060 / 0.110
G24     65.9           27.3                8.3 +/-    0.64      15.3 +/-    0.64  0.070 / 0.090
G27     273.5          36.4               12.0 +/-    1.02      18.5 +/-    1.02  0.080 / 0.190
G32     226.0          54.9               11.5 +/-    0.76      13.7 +/-    0.76  0.120 / 0.190