PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/28-14:42:50
G01     231.5          22.6                7.6 +/-    2.75      15.8 +/-    2.75  0.110 / 0.260
G03     298.6          66.5                6.5 +/-    0.71       7.0 +/-    0.71  0.150 / 0.260
G14     79.9           28.1                5.6 +/-    1.37      10.2 +/-    1.37  0.050 / 0.040
G16     157.1          34.3                8.0 +/-    1.04      12.8 +/-    1.04  0.040 / 0.040
G18     205.6          11.1                6.8 +/-    1.84      18.6 +/-    1.84  0.150 / 0.280
G22     223.8          74.9                6.9 +/-    0.38       7.1 +/-    0.38  0.120 / 0.220
G23     301.3          31.6                7.0 +/-    0.95      11.9 +/-    0.95  0.080 / 0.180
G26     117.4          51.7                7.7 +/-    0.53       9.5 +/-    0.53  0.070 / 0.160
G31     42.5           40.6                4.9 +/-    1.55       7.0 +/-    1.55  0.030 / 0.030
G32     91.5           14.8                7.6 +/-    1.56      19.0 +/-    1.56  0.040 / 0.030