PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/12-22:12:50
G01     249.9          34.7               11.3 +/-    1.34      18.0 +/-    1.34  0.040 / 0.050
G03     315.7          44.6                9.8 +/-    0.94      13.3 +/-    0.94  0.030 / 0.040
G11     236.8          12.3               11.1 +/-    3.91      29.5 +/-    3.91  0.060 / 0.110
G14     61.6           40.0               10.3 +/-    0.71      15.0 +/-    0.71  0.070 / 0.130
G16     165.5          17.1                3.2 +/-   23.40       7.6 +/-   23.40  0.070 / 0.230
G22     303.8          66.3               10.9 +/-    0.48      11.8 +/-    0.48  0.070 / 0.260
G23     287.1          19.3               10.5 +/-    2.14      23.6 +/-    2.14  0.030 / 0.050
G26     137.8          38.2               14.1 +/-    1.00      21.2 +/-    1.00  0.030 / 0.040
G31     40.1           59.6               10.3 +/-    0.66      11.8 +/-    0.66  0.060 / 0.110
G32     77.9           23.1                9.5 +/-    1.78      19.3 +/-    1.78  0.060 / 0.130