PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-23:28:00
G07     5.4            66.6                8.0 +/-    0.58       8.6 +/-    0.58  0.110 / 0.100
G08     71.0           51.4                7.5 +/-    0.69       9.3 +/-    0.69  0.110 / 0.080
G09     181.9          55.1               10.0 +/-    0.43      11.9 +/-    0.43  0.040 / 0.030
G11     135.8          23.9               11.7 +/-    1.51      23.5 +/-    1.51  0.040 / 0.040
G23     159.2          22.3                9.7 +/-    2.42      20.3 +/-    2.42  0.110 / 0.150
G27     41.9           19.4                6.1 +/-    1.64      13.7 +/-    1.64  0.080 / 0.080
G28     254.9          43.5                9.4 +/-    3.40      13.0 +/-    3.40  0.030 / 0.030
G30     320.8          51.3                6.7 +/-    0.61       8.3 +/-    0.61  0.030 / 0.030