PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-06:12:50
G01     318.3          19.8                5.0 +/-    3.41      11.0 +/-    3.41  0.170 / 0.270
G08     256.1          12.0                5.3 +/-    2.88      14.1 +/-    2.88  0.160 / 0.350
G10     83.4           51.8                4.2 +/-    1.11       5.1 +/-    1.11  0.190 / 0.230
G11     301.1          24.0                4.0 +/-    1.42       8.0 +/-    1.42  0.100 / 0.220
G14     295.9          69.4                2.5 +/-    0.96       2.6 +/-    0.96  0.040 / 0.060
G18     302.7          41.6                2.8 +/-    1.20       3.9 +/-    1.20  0.040 / 0.060
G20     105.6          32.1                4.3 +/-    2.29       7.2 +/-    2.29  0.230 / 0.470
G22     302.3          13.7                3.6 +/-    2.95       9.4 +/-    2.95  0.190 / 0.420
G31     173.2          46.6                3.7 +/-    1.27       4.9 +/-    1.27  0.070 / 0.240
G32     15.6           64.5                1.8 +/-    0.73       2.0 +/-    0.73  0.080 / 0.210