PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-09:28:10
G03     230.1          65.7                6.0 +/-    0.73       6.6 +/-    0.73  0.050 / 0.050
G09     306.3          22.8                5.6 +/-    1.82      11.6 +/-    1.82  0.040 / 0.040
G14     102.2          14.0                4.7 +/-    2.90      12.1 +/-    2.90  0.040 / 0.030
G16     112.7          61.6                6.9 +/-    0.27       7.7 +/-    0.27  0.040 / 0.040
G22     191.6          50.4                7.9 +/-    0.84      10.0 +/-    0.84  0.120 / 0.310
G23     323.8          53.6                4.9 +/-    0.39       6.0 +/-    0.39  0.140 / 0.360
G26     61.2           47.6                4.4 +/-    0.84       5.7 +/-    0.84  0.040 / 0.050
G31     55.1           14.5                2.6 +/-    3.95       6.6 +/-    3.95  0.050 / 0.050