PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/27-17:42:40
G10     251.0          27.4               11.7 +/-    1.04      21.6 +/-    1.04  0.040 / 0.060
G13     53.0           29.3                7.7 +/-    1.04      13.8 +/-    1.04  0.040 / 0.050
G15     91.1           59.2               10.5 +/-    0.48      12.0 +/-    0.48  0.130 / 0.720
G16     295.4          15.4                8.8 +/-    3.48      21.6 +/-    3.48  0.170 / 0.710
G20     270.5          51.1                9.3 +/-    1.00      11.5 +/-    1.00  0.060 / 0.180
G21     336.3          61.3               10.1 +/-    0.69      11.4 +/-    0.69  0.060 / 0.170
G26     268.4          15.3                9.3 +/-    2.81      23.0 +/-    2.81  0.030 / 0.040
G29     164.3          49.3               11.9 +/-    1.07      15.2 +/-    1.07  0.030 / 0.040