PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/23-01:12:30
G03     236.6          67.0                5.6 +/-    0.61       6.1 +/-    0.61  0.060 / 0.050
G09     304.5          19.6                4.0 +/-    1.56       8.8 +/-    1.56  0.060 / 0.050
G14     101.6          12.6                4.9 +/-    2.07      13.0 +/-    2.07  0.030 / 0.040
G16     134.2          59.4                9.0 +/-    1.06      10.3 +/-    1.06  0.030 / 0.040
G22     195.1          54.5                7.5 +/-    0.50       9.0 +/-    0.50  0.260 / 0.160
G23     319.7          49.4                5.4 +/-    0.92       6.8 +/-    0.92  0.180 / 0.170
G26     70.0           53.2                5.5 +/-    0.70       6.6 +/-    0.70  0.110 / 0.300
G31     52.1           21.0                3.0 +/-    2.31       6.4 +/-    2.31  0.110 / 0.320