PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/17-13:57:40
G01     309.0          31.7                4.3 +/-    2.10       7.3 +/-    2.10  0.050 / 0.050
G10     103.7          41.9                6.9 +/-    0.90       9.7 +/-    0.90  0.060 / 0.040
G11     287.2          26.9                5.0 +/-    1.14       9.3 +/-    1.14  0.090 / 0.170
G14     344.9          68.3                3.8 +/-    0.59       4.1 +/-    0.59  0.120 / 0.170
G22     309.6          26.8                5.0 +/-    1.31       9.4 +/-    1.31  0.030 / 0.030
G25     85.2           16.1                7.0 +/-    2.28      16.9 +/-    2.28  0.030 / 0.030
G31     166.0          63.8                8.2 +/-    0.28       9.1 +/-    0.28  0.100 / 0.150
G32     35.1           53.1                5.1 +/-    1.04       6.2 +/-    1.04  0.130 / 0.150