PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/23-21:43:10
G05     52.0           10.6                6.7 +/-    2.63      18.5 +/-    2.63  0.110 / 0.150
G10     241.9          18.9               12.8 +/-    1.78      28.9 +/-    1.78  0.400 / 0.300
G13     64.9           34.5                6.7 +/-    1.97      10.8 +/-    1.97  0.040 / 0.050
G15     116.2          57.0                8.6 +/-    0.36      10.1 +/-    0.36  0.040 / 0.050
G16     304.7          15.6                6.3 +/-    2.66      15.4 +/-    2.66  0.090 / 0.320
G20     245.8          9.7                11.4 +/-    1.43      31.9 +/-    1.43  0.100 / 0.350
G21     320.4          51.8                8.6 +/-    0.82      10.7 +/-    0.82  0.060 / 0.100
G26     276.9          19.4               10.1 +/-    1.25      22.6 +/-    1.25  0.060 / 0.130
G29     161.4          63.9                8.5 +/-    0.88       9.3 +/-    0.88  0.030 / 0.030