PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/08-00:58:00
G02     235.6          74.4               12.6 +/-    0.53      13.0 +/-    0.53  0.080 / 0.080
G05     172.0          14.2               16.6 +/-    4.16      42.2 +/-    4.16  0.090 / 0.090
G06     41.1           65.3               10.5 +/-    0.58      11.4 +/-    0.58  0.030 / 0.060
G12     320.6          46.2               11.0 +/-    0.40      14.6 +/-    0.40  0.040 / 0.050
G17     68.8           22.9                8.8 +/-    1.27      18.0 +/-    1.27  0.050 / 0.060
G19     53.9           40.3               10.9 +/-    1.84      15.7 +/-    1.84  0.060 / 0.060
G24     246.5          36.2               14.5 +/-    1.45      22.6 +/-    1.45  0.140 / 0.200