PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/17-01:12:30
G07     4.7            66.4                5.2 +/-    0.92       5.6 +/-    0.92  0.040 / 0.100
G08     70.6           50.9                4.9 +/-    0.51       6.1 +/-    0.51  0.050 / 0.100
G09     181.9          55.6                8.4 +/-    2.22      10.0 +/-    2.22  0.050 / 0.040
G11     135.3          23.7                8.5 +/-    1.24      17.1 +/-    1.24  0.050 / 0.040
G23     159.5          23.8                6.8 +/-    1.82      13.7 +/-    1.82  0.040 / 0.060
G27     42.2           19.8                2.4 +/-    0.74       5.3 +/-    0.74  0.040 / 0.050
G28     254.2          43.1                6.4 +/-    0.96       8.9 +/-    0.96  0.060 / 0.040
G30     319.0          49.8                3.3 +/-    1.12       4.1 +/-    1.12  0.050 / 0.060