PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/09-18:58:00
G10     251.5          27.8               13.0 +/-    1.70      23.9 +/-    1.70  0.040 / 0.040
G13     52.5           29.0               12.6 +/-    0.93      22.6 +/-    0.93  0.040 / 0.040
G15     91.5           59.5               14.1 +/-    0.77      16.0 +/-    0.77  0.120 / 0.730
G16     294.4          15.5                6.8 +/-    3.65      16.6 +/-    3.65  0.120 / 0.590
G20     271.2          51.5               11.6 +/-    1.05      14.3 +/-    1.05  0.050 / 0.160
G21     336.1          61.3               13.1 +/-    0.47      14.7 +/-    0.47  0.060 / 0.150
G26     267.2          15.1                9.9 +/-    1.27      24.7 +/-    1.27  0.030 / 0.040
G29     164.8          49.0               14.8 +/-    1.42      18.9 +/-    1.42  0.040 / 0.050