PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/22-15:27:50
G01     224.7          16.1                7.7 +/-    3.42      18.7 +/-    3.42  0.440 / 0.300
G03     274.8          71.5                6.6 +/-    0.87       7.0 +/-    0.87  0.380 / 0.240
G14     88.0           22.5                6.1 +/-    1.60      12.7 +/-    1.60  0.030 / 0.030
G16     151.6          43.4                8.9 +/-    0.84      12.3 +/-    0.84  0.040 / 0.030
G22     203.2          67.3                7.9 +/-    0.83       8.5 +/-    0.83  0.090 / 0.210
G23     308.0          37.8                6.3 +/-    1.43       9.6 +/-    1.43  0.090 / 0.210
G26     101.6          55.5                5.9 +/-    0.51       7.0 +/-    0.51  0.040 / 0.040
G31     45.4           32.6                5.8 +/-    1.38       9.7 +/-    1.38  0.040 / 0.040