PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/14-18:28:00
G08     288.8          22.8                8.3 +/-    1.06      17.1 +/-    1.06  0.070 / 0.110
G10     15.9           63.2                9.9 +/-    0.67      10.9 +/-    0.67  0.090 / 0.110
G14     234.5          50.6               10.4 +/-    1.71      13.0 +/-    1.71  0.030 / 0.020
G18     70.7           47.4                8.9 +/-    0.61      11.6 +/-    0.61  0.040 / 0.020
G24     53.1           24.4                6.8 +/-    2.06      13.6 +/-    2.06  0.080 / 0.110
G27     248.3          28.9               10.3 +/-    1.84      18.4 +/-    1.84  0.100 / 0.080
G32     255.6          70.2                8.8 +/-    0.58       9.3 +/-    0.58  0.120 / 0.150