PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-01:12:40
G10     287.6          47.7                7.3 +/-    0.71       9.4 +/-    0.71  0.050 / 0.040
G15     48.1           35.8                6.9 +/-    1.04      10.8 +/-    1.04  0.040 / 0.040
G18     340.1          66.8                8.1 +/-    0.97       8.8 +/-    0.97  0.080 / 0.190
G20     67.4           21.1                7.9 +/-    2.70      16.9 +/-    2.70  0.080 / 0.180
G21     72.0           76.7                9.8 +/-    0.46      10.0 +/-    0.46  0.030 / 0.050
G24     105.6          23.7               10.4 +/-    1.51      21.1 +/-    1.51  0.040 / 0.050
G27     305.3          32.2                7.4 +/-    1.34      12.4 +/-    1.34  0.140 / 0.260
G29     167.5          11.4               12.0 +/-    1.86      32.4 +/-    1.86  0.200 / 0.330
G32     208.8          24.7               10.7 +/-    1.13      21.2 +/-    1.13  0.050 / 0.090