PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/27-17:43:00
G02     68.8           26.8                7.9 +/-    0.65      14.8 +/-    0.65  0.110 / 0.250
G05     47.4           52.1                7.7 +/-    0.46       9.4 +/-    0.46  0.080 / 0.170
G12     180.3          17.2               10.4 +/-    1.58      24.4 +/-    1.58  0.080 / 0.090
G13     116.4          24.0               11.6 +/-    1.19      23.1 +/-    1.19  0.120 / 0.120
G15     160.5          20.9               10.9 +/-    1.49      23.5 +/-    1.49  0.140 / 0.250
G21     282.6          25.6                8.7 +/-    1.06      16.7 +/-    1.06  0.140 / 0.220
G25     217.9          40.0                9.3 +/-    1.06      13.6 +/-    1.06  0.030 / 0.030
G26     318.8          10.9              -10.0 +/-   35.19     -27.5 +/-   35.19  0.030 / 0.030
G29     337.3          67.4                7.3 +/-    0.39       7.8 +/-    0.39  0.090 / 0.190