PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-05:28:10
G02     53.4           37.2                2.8 +/-    0.80       4.3 +/-    0.80  0.040 / 0.050
G05     73.6           66.2                6.0 +/-    0.38       6.5 +/-    0.38  0.040 / 0.060
G12     187.8          43.3                6.3 +/-    2.04       8.7 +/-    2.04  0.100 / 0.140
G20     209.9          33.5                6.3 +/-    0.91      10.2 +/-    0.91  0.110 / 0.150
G21     264.3          12.3                3.8 +/-    2.23      10.2 +/-    2.23  0.190 / 0.560
G25     254.7          56.7                5.6 +/-    0.78       6.5 +/-    0.78  0.240 / 0.430
G29     322.6          46.3                2.9 +/-    1.02       3.9 +/-    1.02  0.050 / 0.050