PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-13:27:50
G01     219.9          11.3                6.8 +/-    1.73      18.6 +/-    1.73  0.040 / 0.040
G03     245.5          72.0                4.8 +/-    0.81       5.0 +/-    0.81  0.040 / 0.040
G09     298.4          11.8                6.5 +/-    4.59      17.6 +/-    4.59  0.120 / 0.310
G14     93.6           18.5                5.6 +/-    0.92      12.8 +/-    0.92  0.160 / 0.380
G16     143.0          51.0                7.3 +/-    0.70       9.1 +/-    0.70  0.030 / 0.040
G22     194.6          60.1                4.8 +/-    0.61       5.5 +/-    0.61  0.040 / 0.050
G23     313.8          43.7                4.0 +/-    0.82       5.5 +/-    0.82  0.090 / 0.250
G26     85.8           55.4                4.3 +/-    0.35       5.1 +/-    0.35  0.120 / 0.230
G31     48.7           25.8                4.6 +/-    0.58       8.8 +/-    0.58  0.040 / 0.050