PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/08-23:28:10
G02     202.8          35.2               14.1 +/-    1.31      22.3 +/-    1.31  0.100 / 0.080
G06     167.3          66.3               12.3 +/-    0.43      13.3 +/-    0.43  0.060 / 0.080
G12     306.2          12.8                8.7 +/-    2.43      22.9 +/-    2.43  0.050 / 0.100
G17     36.7           48.4               12.1 +/-    1.50      15.5 +/-    1.50  0.060 / 0.090
G19     0.7            65.4               10.9 +/-    0.77      11.8 +/-    0.77  0.050 / 0.040
G24     296.6          38.9               11.1 +/-    2.53      16.5 +/-    2.53  0.040 / 0.030
G28     100.0          34.9               13.7 +/-    0.84      21.8 +/-    0.84  0.260 / 0.290