PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/14-23:12:30
G02     204.1          39.2               12.8 +/-    0.68      18.9 +/-    0.68  0.080 / 0.090
G06     162.0          70.7               11.7 +/-    0.35      12.3 +/-    0.35  0.060 / 0.090
G12     308.3          15.7                7.1 +/-    2.08      17.2 +/-    2.08  0.040 / 0.030
G17     40.0           45.7                9.0 +/-    0.71      12.0 +/-    0.71  0.040 / 0.040
G19     8.7            63.0                9.6 +/-    0.38      10.6 +/-    0.38  0.060 / 0.120
G24     292.2          40.5               14.3 +/-    8.21      20.6 +/-    8.21  0.060 / 0.120
G28     103.8          32.4               10.7 +/-    0.84      17.8 +/-    0.84  0.130 / 0.330