PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/23-17:58:10
G10     250.8          27.3               10.0 +/-    1.80      18.5 +/-    1.80  0.090 / 0.340
G13     53.1           29.4               10.5 +/-    1.86      18.7 +/-    1.86  0.100 / 0.330
G15     91.8           59.3               10.1 +/-    1.21      11.5 +/-    1.21  0.040 / 0.040
G16     295.5          15.5                6.9 +/-    1.50      16.9 +/-    1.50  0.040 / 0.040
G20     270.2          51.0               11.7 +/-    2.94      14.6 +/-    2.94  0.080 / 0.130
G21     335.9          61.1               -2.6 +/-    0.50      -2.9 +/-    0.50  0.090 / 0.200
G26     268.4          15.4                8.3 +/-    0.94      20.4 +/-    0.94  0.040 / 0.040
G29     164.4          49.6               12.7 +/-    0.90      16.1 +/-    0.90  0.030 / 0.030