PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/21-17:42:30
G01     308.9          31.7                7.7 +/-    1.93      12.9 +/-    1.93  0.090 / 0.160
G10     103.6          42.1                8.7 +/-    0.53      12.3 +/-    0.53  0.090 / 0.170
G11     286.2          27.4                7.3 +/-    1.44      13.5 +/-    1.44  0.070 / 0.100
G14     349.7          68.0                6.8 +/-    0.93       7.2 +/-    0.93  0.070 / 0.100
G18     116.4          13.9                9.5 +/-    1.61      24.2 +/-    1.61  0.030 / 0.040
G22     308.9          24.5                7.8 +/-    2.58      15.3 +/-    2.58  0.030 / 0.040
G25     84.7           16.0                9.4 +/-    1.02      22.8 +/-    1.02  0.060 / 0.210
G31     169.0          62.5                9.8 +/-    0.59      10.9 +/-    0.59  0.070 / 0.200
G32     33.9           53.9                7.8 +/-    0.42       9.4 +/-    0.42  0.050 / 0.050