PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/23-13:58:10
G03     214.6          63.8                9.3 +/-    2.23      10.3 +/-    2.23  0.050 / 0.120
G07     252.4          15.5                6.1 +/-    2.67      15.0 +/-    2.67  0.060 / 0.080
G09     305.5          20.5                7.0 +/-    4.05      15.3 +/-    4.05  0.060 / 0.230
G14     103.3          10.8                6.5 +/-    2.45      17.9 +/-    2.45  0.070 / 0.170
G16     124.8          61.1                9.3 +/-    2.84      10.4 +/-    2.84  0.050 / 0.050
G22     187.9          47.2               10.0 +/-    3.43      13.1 +/-    3.43  0.040 / 0.050
G23     323.1          53.1                8.3 +/-    2.35      10.1 +/-    2.35  0.030 / 0.100
G26     65.3           51.1                5.9 +/-    3.21       7.3 +/-    3.21  0.030 / 0.040
G31     54.6           16.5                5.5 +/-    0.80      13.3 +/-    0.80  0.170 / 0.430