PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/07-00:12:30
G03     238.5          67.7                6.7 +/-    0.71       7.2 +/-    0.71  0.050 / 0.040
G09     303.7          18.3                5.6 +/-    2.45      12.9 +/-    2.45  0.050 / 0.040
G14     100.5          13.6                4.9 +/-    2.11      12.5 +/-    2.11  0.160 / 0.210
G16     134.5          58.7                8.5 +/-    0.75       9.8 +/-    0.75  0.250 / 0.180
G22     195.7          55.6                7.2 +/-    0.52       8.5 +/-    0.52  0.030 / 0.040
G23     319.0          48.7                4.7 +/-    0.58       6.1 +/-    0.58  0.030 / 0.040
G26     71.1           53.2                4.2 +/-    0.47       5.1 +/-    0.47  0.140 / 0.360
G31     51.7           21.3                2.8 +/-    3.18       6.0 +/-    3.18  0.130 / 0.320