PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/25-16:27:50
G01     320.9          11.0              -11.2 +/-   33.21     -30.6 +/-   33.21  0.230 / 0.400
G08     266.4          16.8               11.0 +/-    2.06      26.3 +/-    2.06  0.230 / 0.320
G10     65.4           57.7                8.4 +/-    0.52       9.7 +/-    0.52  0.030 / 0.040
G11     311.0          17.3                6.4 +/-    2.15      15.0 +/-    2.15  0.030 / 0.030
G14     272.1          66.9                8.8 +/-    0.61       9.5 +/-    0.61  0.130 / 0.320
G27     228.9          13.7               12.7 +/-    5.09      32.7 +/-    5.09  0.150 / 0.380
G31     177.9          33.1               11.0 +/-    1.95      18.2 +/-    1.95  0.060 / 0.090
G32     348.2          72.6                9.0 +/-    0.65       9.4 +/-    0.65  0.050 / 0.080