PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/06-09:28:00
G02     67.1           25.5                3.6 +/-    1.65       6.9 +/-    1.65  0.040 / 0.030
G05     49.8           53.0                3.8 +/-    0.64       4.7 +/-    0.64  0.040 / 0.040
G12     184.6          25.7                3.2 +/-    1.28       6.1 +/-    1.28  0.080 / 0.110
G13     122.8          20.4                4.9 +/-    2.09      10.6 +/-    2.09  0.110 / 0.120
G15     158.1          19.1                4.1 +/-    1.78       9.3 +/-    1.78  0.040 / 0.050
G20     215.9          63.3                6.5 +/-    1.09       7.1 +/-    1.09  0.040 / 0.040
G21     278.7          24.3                5.2 +/-    1.80      10.3 +/-    1.80  0.090 / 0.130
G25     227.8          46.0                4.6 +/-    2.24       6.1 +/-    2.24  0.100 / 0.180
G29     335.6          64.0                3.0 +/-    0.73       3.3 +/-    0.73  0.110 / 0.270