PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/13-01:12:40
G01     226.9          17.6                4.4 +/-    2.96      10.2 +/-    2.96  0.030 / 0.040
G03     290.9          66.1                2.8 +/-    0.73       3.0 +/-    0.73  0.040 / 0.040
G14     86.4           24.0                4.2 +/-    1.43       8.4 +/-    1.43  0.040 / 0.070
G16     155.0          41.0                7.5 +/-    0.63      10.7 +/-    0.63  0.040 / 0.080
G22     221.9          71.8                2.9 +/-    1.06       3.0 +/-    1.06  0.040 / 0.080
G23     305.9          35.5                3.7 +/-    1.28       5.8 +/-    1.28  0.040 / 0.090
G26     105.5          54.9                3.0 +/-    0.72       3.6 +/-    0.72  0.140 / 0.340
G31     43.6           36.5                0.6 +/-    0.48       0.9 +/-    0.48  0.150 / 0.420