PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-23:57:50
G10     253.1          27.8               12.8 +/-    1.73      23.5 +/-    1.73  0.090 / 0.120
G13     52.0           29.6                8.3 +/-    1.12      14.7 +/-    1.12  0.100 / 0.160
G15     83.5           57.7                8.9 +/-    0.34      10.3 +/-    0.34  0.120 / 0.230
G16     294.8          14.3                9.0 +/-    1.08      22.7 +/-    1.08  0.120 / 0.190
G18     272.7          56.9               12.8 +/-    0.88      14.9 +/-    0.88  0.040 / 0.070
G20     45.5           44.9                7.2 +/-    0.84       9.7 +/-    0.84  0.040 / 0.060
G26     267.2          14.3               10.3 +/-    2.83      26.1 +/-    2.83  0.050 / 0.060
G29     164.6          44.0               12.6 +/-    1.33      17.2 +/-    1.33  0.040 / 0.090