PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/22-13:42:30
G03     235.1          70.7                7.1 +/-    1.02       7.5 +/-    1.02  0.030 / 0.040
G09     300.3          13.9                6.1 +/-    2.33      15.7 +/-    2.33  0.030 / 0.040
G14     96.2           16.5                8.1 +/-    1.00      19.5 +/-    1.00  0.040 / 0.060
G16     139.6          53.8                9.9 +/-    0.69      12.0 +/-    0.69  0.040 / 0.050
G22     192.2          56.8                9.7 +/-    1.77      11.3 +/-    1.77  0.120 / 0.390
G23     316.0          45.9                5.7 +/-    1.28       7.6 +/-    1.28  0.100 / 0.370
G26     80.1           54.9                8.2 +/-    0.61       9.8 +/-    0.61  0.050 / 0.060
G31     50.1           23.4                5.5 +/-    0.37      11.1 +/-    0.37  0.050 / 0.060