PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/24-21:58:00
G03     198.1          40.0                9.9 +/-    1.98      14.4 +/-    1.98  0.110 / 0.210
G07     271.0          25.4               11.7 +/-    1.71      22.7 +/-    1.71  0.080 / 0.200
G08     155.5          11.1                3.8 +/-   29.59      10.3 +/-   29.59  0.040 / 0.040
G09     317.2          41.8                9.0 +/-    2.09      12.7 +/-    2.09  0.040 / 0.040
G16     59.5           59.1                9.4 +/-    0.44      10.7 +/-    0.44  0.220 / 0.400
G22     183.0          24.6                9.0 +/-    3.04      17.7 +/-    3.04  0.200 / 0.350
G23     354.2          75.3                7.6 +/-    0.44       7.8 +/-    0.44  0.030 / 0.060
G26     44.6           29.5                6.6 +/-    1.36      11.7 +/-    1.36  0.030 / 0.050
G27     119.6          22.4               11.6 +/-    1.24      24.0 +/-    1.24  0.090 / 0.140