PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-09:12:40
G02     84.5           11.6                4.2 +/-    1.82      11.2 +/-    1.82  0.050 / 0.080
G05     44.9           31.4                3.3 +/-    1.09       5.6 +/-    1.09  0.060 / 0.130
G13     100.0          33.3                5.9 +/-    1.89       9.6 +/-    1.89  0.030 / 0.040
G15     143.1          38.5                6.6 +/-    0.64       9.9 +/-    0.64  0.040 / 0.040
G20     283.1          82.9                3.9 +/-    0.96       4.0 +/-    0.96  0.100 / 0.110
G21     297.8          37.2                4.9 +/-    2.02       7.5 +/-    2.02  0.090 / 0.120
G25     210.0          26.3                5.0 +/-    1.16       9.4 +/-    1.16  0.110 / 0.190
G26     305.6          18.4                3.6 +/-    1.43       8.3 +/-    1.43  0.210 / 0.140
G29     34.0           86.3                5.5 +/-    0.38       5.5 +/-    0.38  0.110 / 0.240