PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/12-06:57:30
G01     220.1          10.9                6.2 +/-    2.34      17.0 +/-    2.34  0.040 / 0.060
G03     264.5          69.4                4.5 +/-    0.86       4.8 +/-    0.86  0.040 / 0.050
G09     300.3          15.7                3.0 +/-    3.03       7.3 +/-    3.03  0.140 / 0.290
G14     93.8           19.8                3.2 +/-    1.33       7.1 +/-    1.33  0.390 / 0.360
G16     132.3          54.4                5.6 +/-    1.38       6.8 +/-    1.38  0.090 / 0.230
G22     202.8          62.7                7.5 +/-    0.66       8.3 +/-    0.66  0.080 / 0.240
G23     313.9          43.7                4.2 +/-    1.27       5.8 +/-    1.27  0.040 / 0.060
G26     77.2           52.6                3.7 +/-    0.51       4.5 +/-    0.51  0.040 / 0.060
G31     49.6           22.7                2.0 +/-    0.68       4.0 +/-    0.68  0.070 / 0.080