PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/12-21:28:10
G08     318.6          13.0               10.1 +/-    1.43      26.5 +/-    1.43  0.050 / 0.050
G10     307.1          54.4                8.8 +/-    1.10      10.6 +/-    1.10  0.050 / 0.050
G14     212.2          19.6               11.7 +/-    3.42      26.1 +/-    3.42  0.080 / 0.080
G15     45.5           21.8                8.6 +/-    0.90      18.2 +/-    0.90  0.060 / 0.080
G18     14.8           64.2                8.8 +/-    0.70       9.7 +/-    0.70  0.100 / 0.220
G20     76.4           13.8               10.2 +/-    1.68      26.2 +/-    1.68  0.080 / 0.220
G21     116.4          66.7               10.8 +/-    0.86      11.6 +/-    0.86  0.100 / 0.170
G24     91.3           28.9               10.7 +/-    0.83      19.1 +/-    0.83  0.070 / 0.120
G27     290.5          37.3               10.5 +/-    1.96      16.0 +/-    1.96  0.030 / 0.040
G32     214.7          35.9               14.4 +/-    1.15      22.5 +/-    1.15  0.030 / 0.050