PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/23-21:28:00
G05     49.2           16.3                5.9 +/-    1.95      14.2 +/-    1.95  0.150 / 0.120
G10     237.0          13.6               13.8 +/-    2.28      35.5 +/-    2.28  0.100 / 0.210
G13     73.7           36.1                8.0 +/-    1.09      12.4 +/-    1.09  0.040 / 0.050
G15     128.4          52.8                9.0 +/-    0.99      11.0 +/-    0.99  0.040 / 0.070
G16     311.4          13.9                7.0 +/-    1.59      18.0 +/-    1.59  0.160 / 0.280
G20     241.3          4.7                11.0 +/-    0.93      33.5 +/-    0.93  0.140 / 0.260
G21     313.5          47.0                8.8 +/-    0.79      11.6 +/-    0.79  0.060 / 0.080
G26     284.3          20.8               10.8 +/-    1.27      23.2 +/-    1.27  0.050 / 0.100
G29     157.4          72.2                8.3 +/-    0.37       8.7 +/-    0.37  0.030 / 0.040