PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-18:57:30
G03     223.7          66.0               10.3 +/-    1.13      11.2 +/-    1.13  0.030 / 0.050
G09     304.4          18.9               11.8 +/-    1.15      26.8 +/-    1.15  0.040 / 0.050
G14     101.3          14.2               12.8 +/-    1.39      32.5 +/-    1.39  0.080 / 0.150
G16     123.1          60.8               16.6 +/-    0.61      18.8 +/-    0.61  0.140 / 0.190
G22     191.4          51.9               14.0 +/-    1.70      17.3 +/-    1.70  0.110 / 0.300
G23     322.5          52.4               13.7 +/-    1.07      16.8 +/-    1.07  0.130 / 0.300
G26     64.9           50.0               11.7 +/-    0.34      14.8 +/-    0.34  0.040 / 0.060
G31     53.7           17.2                9.5 +/-    1.40      22.5 +/-    1.40  0.050 / 0.050