PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/12-04:12:40
G01     68.9           32.7                4.4 +/-    0.75       7.4 +/-    0.75  0.030 / 0.060
G07     138.3          29.4                5.2 +/-    1.19       9.2 +/-    1.19  0.040 / 0.050
G11     53.6           30.6                3.9 +/-    0.71       6.8 +/-    0.71  0.100 / 0.300
G13     273.7          36.9                6.0 +/-    1.16       9.1 +/-    1.16  0.090 / 0.280
G15     300.5          16.1                2.4 +/-    3.18       5.9 +/-    3.18  0.030 / 0.040
G17     236.9          70.4                5.8 +/-    0.72       6.1 +/-    0.72  0.030 / 0.040
G19     225.6          44.5                5.6 +/-    0.60       7.6 +/-    0.60  0.060 / 0.110
G28     23.7           58.6                2.9 +/-    0.30       3.3 +/-    0.30  0.050 / 0.110
G30     136.6          57.2                5.1 +/-    0.64       5.9 +/-    0.64  0.040 / 0.070