PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/13-14:13:00
G01     219.9          11.3                7.7 +/-    3.66      21.0 +/-    3.66  0.180 / 0.380
G03     245.8          72.0                9.5 +/-    0.63       9.9 +/-    0.63  0.190 / 0.370
G14     93.7           18.4                8.3 +/-    1.31      19.0 +/-    1.31  0.030 / 0.030
G16     143.9          50.7               10.4 +/-    0.59      13.0 +/-    0.59  0.030 / 0.030
G22     193.1          59.4               14.5 +/-    0.37      16.5 +/-    0.37  0.110 / 0.230
G23     313.5          43.3                7.8 +/-    1.04      10.7 +/-    1.04  0.120 / 0.210
G26     86.5           55.6                8.7 +/-    0.97      10.3 +/-    0.97  0.040 / 0.040
G31     48.5           26.1                7.0 +/-    1.94      13.3 +/-    1.94  0.040 / 0.040