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                6.2 +/-    2.44      16.8 +/-    2.44  0.240 / 0.330
G03     245.5          72.0                5.8 +/-    0.68       6.1 +/-    0.68  0.170 / 0.340
G14     93.6           18.5                5.6 +/-    1.31      12.7 +/-    1.31  0.040 / 0.030
G16     143.0          51.0                6.6 +/-    0.85       8.3 +/-    0.85  0.050 / 0.040
G22     194.6          60.1                6.3 +/-    0.35       7.1 +/-    0.35  0.040 / 0.040
G23     313.8          43.7                4.7 +/-    0.97       6.5 +/-    0.97  0.040 / 0.060
G26     85.8           55.4                4.6 +/-    0.86       5.5 +/-    0.86  0.130 / 0.220
G31     48.7           25.8                4.9 +/-    1.81       9.4 +/-    1.81  0.100 / 0.220