PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/26-20:42:50
G01     268.5          40.5                7.9 +/-    2.07      11.4 +/-    2.07  0.040 / 0.040
G03     316.1          31.4                7.6 +/-    1.27      12.9 +/-    1.27  0.040 / 0.050
G10     130.7          16.1               10.9 +/-    1.85      26.3 +/-    1.85  0.030 / 0.020
G11     249.9          19.8                8.0 +/-    1.70      17.6 +/-    1.70  0.030 / 0.020
G14     45.3           49.1                6.9 +/-    0.36       8.8 +/-    0.36  0.120 / 0.200
G22     313.7          52.9                7.4 +/-    0.65       9.0 +/-    0.65  0.130 / 0.260
G25     50.7           16.3                7.5 +/-    3.57      18.1 +/-    3.57  0.050 / 0.060
G26     148.1          25.8               12.9 +/-    2.72      24.7 +/-    2.72  0.040 / 0.060
G31     52.7           73.9                8.0 +/-    0.36       8.2 +/-    0.36  0.090 / 0.070
G32     65.4           31.9                7.4 +/-    1.15      12.4 +/-    1.15  0.080 / 0.070