PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/28-04:27:50
G01     292.5          40.9                8.9 +/-    5.40      12.8 +/-    5.40  0.050 / 0.080
G03     311.2          15.7                4.7 +/-    1.75      11.5 +/-    1.75  0.050 / 0.070
G10     117.9          28.8                5.7 +/-    0.70      10.2 +/-    0.70  0.060 / 0.080
G11     267.8          25.6                7.2 +/-    1.45      13.9 +/-    1.45  0.040 / 0.080
G14     19.1           60.8                4.4 +/-    0.71       4.9 +/-    0.71  0.040 / 0.050
G18     254.5          48.6                6.0 +/-    5.73       7.8 +/-    5.73  0.040 / 0.050
G22     313.6          36.1                4.4 +/-    0.70       6.8 +/-    0.70  0.110 / 0.100
G25     70.3           18.6                3.9 +/-    1.19       8.9 +/-    1.19  0.060 / 0.070
G31     130.8          77.4                5.3 +/-    0.62       5.4 +/-    0.62  0.050 / 0.060
G32     47.9           44.4                4.6 +/-    0.90       6.3 +/-    0.90  0.050 / 0.040