PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-18:57:40
G03     223.7          66.0               13.7 +/-    0.82      14.8 +/-    0.82  0.040 / 0.050
G09     304.4          18.9               12.1 +/-    1.88      27.3 +/-    1.88  0.050 / 0.050
G14     101.3          14.2               13.9 +/-    1.82      35.3 +/-    1.82  0.150 / 0.430
G16     123.1          60.8               16.5 +/-    0.41      18.6 +/-    0.41  0.120 / 0.350
G22     191.4          51.9               14.1 +/-    0.88      17.4 +/-    0.88  0.290 / 0.170
G23     322.5          52.4               13.7 +/-    0.52      16.7 +/-    0.52  0.230 / 0.270
G26     64.9           50.0               13.4 +/-    1.17      16.9 +/-    1.17  0.030 / 0.040
G31     53.7           17.2               10.5 +/-    3.34      24.8 +/-    3.34  0.030 / 0.050