PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/30-22:42:50
G02     212.1          55.8               13.3 +/-    0.99      15.7 +/-    0.99  0.050 / 0.080
G06     86.2           80.1               10.6 +/-    0.55      10.8 +/-    0.55  0.050 / 0.090
G12     315.6          28.9                9.6 +/-    1.36      17.2 +/-    1.36  0.070 / 0.210
G17     53.2           35.1               10.6 +/-    0.82      16.8 +/-    0.82  0.070 / 0.200
G19     33.4           52.1               11.0 +/-    0.58      13.5 +/-    0.58  0.040 / 0.060
G24     270.8          42.5               12.9 +/-    0.77      18.0 +/-    0.77  0.040 / 0.070
G28     117.6          21.4               14.4 +/-    3.16      30.6 +/-    3.16  0.060 / 0.120