PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-12:27:20
G03     231.2          66.9                9.2 +/-    1.02       9.9 +/-    1.02  0.130 / 0.230
G14     99.8           17.0                7.2 +/-    1.57      17.1 +/-    1.57  0.120 / 0.260
G16     118.9          60.5                9.6 +/-    0.50      10.8 +/-    0.50  0.040 / 0.050
G22     189.6          51.0               10.3 +/-    1.75      12.8 +/-    1.75  0.050 / 0.040
G23     324.1          53.9                7.2 +/-    0.52       8.7 +/-    0.52  0.040 / 0.040
G26     64.2           49.1                7.1 +/-    0.82       9.1 +/-    0.82  0.040 / 0.040
G31     53.9           16.2                6.8 +/-    2.84      16.4 +/-    2.84  0.040 / 0.050