PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/13-20:12:30
G03     203.1          50.0                9.3 +/-    1.18      11.8 +/-    1.18  0.080 / 0.120
G07     262.1          19.0               10.3 +/-    1.77      23.3 +/-    1.77  0.060 / 0.100
G09     313.1          32.5                7.9 +/-    1.70      13.2 +/-    1.70  0.040 / 0.040
G16     79.9           64.2               10.6 +/-    0.42      11.6 +/-    0.42  0.040 / 0.040
G22     185.3          34.3               10.7 +/-    0.96      17.2 +/-    0.96  0.110 / 0.190
G23     338.7          66.7                7.7 +/-    0.98       8.3 +/-    0.98  0.100 / 0.180
G26     48.7           37.8                7.1 +/-    0.54      10.8 +/-    0.54  0.040 / 0.050
G27     128.3          15.4               12.0 +/-    1.14      29.6 +/-    1.14  0.040 / 0.040