PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/12-20:12:30
G08     300.1          22.2                7.5 +/-    1.35      15.6 +/-    1.35  0.060 / 0.100
G10     349.8          62.1                8.1 +/-    0.57       9.1 +/-    0.57  0.060 / 0.090
G14     224.3          40.6               11.0 +/-    0.96      15.8 +/-    0.96  0.040 / 0.070
G18     54.9           54.1                8.3 +/-    0.65      10.0 +/-    0.65  0.050 / 0.070
G21     141.4          43.7               12.1 +/-    1.48      16.7 +/-    1.48  0.060 / 0.090
G24     64.6           29.1                8.5 +/-    0.59      15.1 +/-    0.59  0.050 / 0.110
G27     261.0          34.8                9.7 +/-    1.68      15.4 +/-    1.68  0.030 / 0.050
G32     233.6          59.3               12.1 +/-    1.05      13.8 +/-    1.05  0.030 / 0.030