PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/22-01:12:40
G02     13.6           69.3                8.2 +/-    0.87       8.7 +/-    0.87  0.210 / 0.350
G05     157.0          45.3               11.5 +/-    0.94      15.5 +/-    0.94  0.290 / 0.460
G06     44.0           33.1                6.3 +/-    1.35      10.3 +/-    1.35  0.030 / 0.030
G12     283.7          77.6                9.4 +/-    0.72       9.6 +/-    0.72  0.030 / 0.020
G19     84.7           20.2               10.2 +/-    1.43      22.4 +/-    1.43  0.060 / 0.100
G24     219.3          14.6               11.6 +/-   14.70      29.2 +/-   14.70  0.060 / 0.090
G25     313.4          39.7                8.3 +/-    1.10      12.1 +/-    1.10  0.060 / 0.080
G29     295.8          19.2                8.2 +/-    0.97      18.5 +/-    0.97  0.110 / 0.080