PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/19-01:27:40
G03     238.5          67.4                3.0 +/-    0.39       3.2 +/-    0.39  0.070 / 0.050
G09     304.2          19.2                1.6 +/-    1.88       3.6 +/-    1.88  0.050 / 0.040
G14     101.1          12.9                6.0 +/-    2.28      15.6 +/-    2.28  0.040 / 0.040
G16     135.7          58.8                5.8 +/-    0.52       6.6 +/-    0.52  0.040 / 0.040
G22     195.5          55.1                4.4 +/-    0.63       5.2 +/-    0.63  0.240 / 0.280
G23     319.2          48.9                2.7 +/-    0.82       3.5 +/-    0.82  0.130 / 0.210
G26     71.3           53.7                2.8 +/-    0.50       3.4 +/-    0.50  0.160 / 0.310
G31     51.7           21.7                2.3 +/-    2.58       4.9 +/-    2.58  0.130 / 0.300