PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/13-00:12:30
G02     218.3          63.6               11.2 +/-    0.96      12.4 +/-    0.96  0.060 / 0.080
G06     56.1           75.9                9.4 +/-    0.42       9.7 +/-    0.42  0.070 / 0.080
G12     318.2          35.5                9.0 +/-    2.03      14.2 +/-    2.03  0.120 / 0.070
G17     59.7           29.9                9.9 +/-    2.83      17.3 +/-    2.83  0.050 / 0.070
G19     41.9           47.4                9.7 +/-    0.84      12.6 +/-    0.84  0.050 / 0.050
G24     260.2          41.0               11.0 +/-    4.13      15.7 +/-    4.13  0.040 / 0.040
G28     123.0          15.6               10.9 +/-    2.57      26.8 +/-    2.57  0.040 / 0.030