PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/11-17:58:00
G08     307.7          19.7               11.5 +/-    1.95      25.6 +/-    1.95  0.060 / 0.090
G10     334.9          60.4                8.0 +/-    0.43       9.0 +/-    0.43  0.070 / 0.090
G14     219.5          33.1               11.6 +/-    1.96      19.0 +/-    1.96  0.040 / 0.060
G18     44.9           57.3                8.5 +/-    0.33       9.9 +/-    0.33  0.040 / 0.060
G21     136.0          49.2               13.4 +/-    0.53      17.1 +/-    0.53  0.050 / 0.090
G24     72.7           30.4               10.1 +/-    0.63      17.5 +/-    0.63  0.050 / 0.090
G27     270.4          37.1               11.7 +/-    1.20      17.8 +/-    1.20  0.060 / 0.120
G32     225.5          53.3               12.4 +/-    1.56      15.0 +/-    1.56  0.060 / 0.140