PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-19:27:30
G03     227.7          67.0                6.7 +/-    1.78       7.2 +/-    1.78  0.060 / 0.060
G09     303.8          18.0                8.7 +/-    1.67      20.0 +/-    1.67  0.050 / 0.050
G14     100.4          14.8               10.0 +/-    2.31      24.9 +/-    2.31  0.100 / 0.150
G16     126.2          59.9               10.1 +/-    0.63      11.5 +/-    0.63  0.080 / 0.130
G22     192.6          53.5                9.1 +/-    1.27      11.0 +/-    1.27  0.030 / 0.050
G23     321.2          51.1                9.1 +/-    1.31      11.3 +/-    1.31  0.030 / 0.050
G26     66.9           50.8                8.0 +/-    0.51      10.0 +/-    0.51  0.110 / 0.300
G31     53.0           18.3                6.1 +/-    0.65      14.0 +/-    0.65  0.100 / 0.340