PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/16-21:58:00
G01     249.3          34.4                8.3 +/-    0.98      13.3 +/-    0.98  0.040 / 0.040
G03     315.5          45.3                5.8 +/-    1.29       7.7 +/-    1.29  0.030 / 0.030
G11     236.5          11.9                7.4 +/-    1.47      19.8 +/-    1.47  0.080 / 0.120
G14     62.2           39.7                5.9 +/-    0.49       8.6 +/-    0.49  0.060 / 0.090
G16     165.1          17.8                6.3 +/-   15.52      14.6 +/-   15.52  0.070 / 0.270
G22     302.9          66.9                5.6 +/-    0.63       6.0 +/-    0.63  0.070 / 0.310
G23     287.6          19.8                7.5 +/-    1.43      16.5 +/-    1.43  0.060 / 0.130
G26     137.0          38.7               10.2 +/-    1.02      15.2 +/-    1.02  0.100 / 0.150
G31     40.0           58.8                5.7 +/-    0.54       6.5 +/-    0.54  0.030 / 0.050
G32     78.4           22.6                5.3 +/-    0.67      10.9 +/-    0.67  0.030 / 0.050