PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-06:13:00
G01     318.3          19.8                3.9 +/-    1.19       8.7 +/-    1.19  0.030 / 0.040
G08     256.1          12.0                3.0 +/-   14.27       7.9 +/-   14.27  0.040 / 0.050
G10     83.4           51.8                4.4 +/-    0.75       5.4 +/-    0.75  0.170 / 0.240
G11     301.1          24.0                1.5 +/-    2.21       3.0 +/-    2.21  0.120 / 0.200
G14     295.9          69.4                2.1 +/-    0.55       2.3 +/-    0.55  0.210 / 0.260
G18     302.7          41.6                3.3 +/-    0.95       4.7 +/-    0.95  0.250 / 0.320
G20     105.6          32.1                4.9 +/-    0.98       8.2 +/-    0.98  0.270 / 0.310
G22     302.3          13.7                3.2 +/-    2.82       8.3 +/-    2.82  0.230 / 0.260
G31     173.2          46.6                4.2 +/-    1.10       5.6 +/-    1.10  0.070 / 0.080
G32     15.6           64.5                2.9 +/-    0.37       3.1 +/-    0.37  0.090 / 0.090