PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-18:27:40
G01     85.0           32.8               13.2 +/-    1.67      21.9 +/-    1.67  0.170 / 0.230
G07     129.3          42.1               16.5 +/-    1.06      23.3 +/-    1.06  0.220 / 0.300
G11     64.5           38.3               12.2 +/-    1.77      18.3 +/-    1.77  0.030 / 0.050
G13     289.5          37.0               16.2 +/-    2.23      24.7 +/-    2.23  0.030 / 0.060
G15     312.8          11.3                9.6 +/-   17.18      26.0 +/-   17.18  0.020 / 0.030
G17     218.5          55.2               17.1 +/-    1.10      20.3 +/-    1.10  0.030 / 0.030
G18     59.7           23.0               11.8 +/-    1.35      24.2 +/-    1.35  0.070 / 0.100
G19     216.9          29.4               17.7 +/-    2.97      31.4 +/-    2.97  0.060 / 0.080
G28     358.0          61.3               12.9 +/-    1.08      14.4 +/-    1.08  0.110 / 0.140
G30     117.1          72.2               15.8 +/-    0.75      16.5 +/-    0.75  0.070 / 0.160