PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/28-04:28:00
G01     226.4          18.8                6.3 +/-    2.95      14.4 +/-    2.95  0.140 / 0.370
G03     294.6          65.9                4.0 +/-    0.71       4.4 +/-    0.71  0.140 / 0.360
G14     83.0           27.4                3.7 +/-    1.61       6.8 +/-    1.61  0.090 / 0.180
G16     147.0          42.4                7.2 +/-    0.77      10.1 +/-    0.77  0.080 / 0.200
G22     228.5          72.4                5.4 +/-    0.66       5.6 +/-    0.66  0.040 / 0.040
G23     306.9          37.9                3.3 +/-    1.57       5.0 +/-    1.57  0.040 / 0.040
G26     101.6          53.4                7.0 +/-    0.85       8.4 +/-    0.85  0.050 / 0.090
G31     45.0           32.8                2.8 +/-    0.58       4.7 +/-    0.58  0.060 / 0.100