PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/22-13:27:50
G01     222.4          13.9                5.9 +/-    2.91      15.2 +/-    2.91  0.150 / 0.300
G03     259.0          72.7                8.1 +/-    0.49       8.4 +/-    0.49  0.150 / 0.500
G14     90.6           20.7                6.6 +/-    1.68      14.2 +/-    1.68  0.040 / 0.030
G16     146.9          47.3               10.4 +/-    0.83      13.6 +/-    0.83  0.040 / 0.040
G22     197.8          63.8                8.6 +/-    0.42       9.5 +/-    0.42  0.040 / 0.040
G23     310.9          40.9                6.7 +/-    1.22       9.6 +/-    1.22  0.040 / 0.030
G26     93.1           55.5                9.0 +/-    1.39      10.7 +/-    1.39  0.150 / 0.300
G31     47.1           28.8                5.7 +/-    2.14      10.2 +/-    2.14  0.210 / 0.340