PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-22:12:40
G02     201.6          30.2               19.4 +/-    2.33      33.8 +/-    2.33  0.040 / 0.100
G06     169.4          61.6               15.7 +/-    0.78      17.6 +/-    0.78  0.040 / 0.100
G17     31.9           52.3               10.8 +/-    1.02      13.2 +/-    1.02  0.080 / 0.110
G19     350.2          67.9               10.3 +/-    0.76      11.0 +/-    0.76  0.060 / 0.110
G24     301.8          36.2               10.3 +/-    0.69      15.9 +/-    0.69  0.050 / 0.040
G28     94.9           38.1               12.3 +/-    0.69      18.4 +/-    0.69  0.040 / 0.050