PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/25-19:57:50
G10     252.5          28.5               10.7 +/-    2.21      19.4 +/-    2.21  0.030 / 0.030
G13     51.5           28.3                8.8 +/-    1.50      16.0 +/-    1.50  0.040 / 0.040
G15     90.3           59.8                9.9 +/-    1.07      11.2 +/-    1.07  0.120 / 0.360
G16     293.0          15.5                7.0 +/-    1.40      17.3 +/-    1.40  0.100 / 0.310
G20     272.8          52.2               10.1 +/-    2.61      12.4 +/-    2.61  0.080 / 0.130
G21     337.1          61.8               10.2 +/-    0.57      11.4 +/-    0.57  0.140 / 0.180
G26     265.7          14.7                7.7 +/-    2.33      19.3 +/-    2.33  0.040 / 0.030
G29     165.3          47.9               11.1 +/-    0.64      14.4 +/-    0.64  0.030 / 0.030