PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/17-09:12:30
G10     254.4          29.3                6.0 +/-    2.56      10.6 +/-    2.56  0.130 / 0.320
G13     50.2           27.9                2.3 +/-    2.66       4.2 +/-    2.66  0.090 / 0.390
G15     76.0           55.3                5.9 +/-    0.84       7.0 +/-    0.84  0.030 / 0.040
G16     291.9          14.8                3.0 +/-    1.43       7.5 +/-    1.43  0.050 / 0.040
G20     36.1           55.6                4.7 +/-    0.84       5.6 +/-    0.84  0.040 / 0.040
G21     341.4          64.1                4.7 +/-    0.64       5.2 +/-    0.64  0.060 / 0.040
G26     263.2          13.8                4.9 +/-    2.83      12.6 +/-    2.83  0.140 / 0.190
G29     165.6          44.2                7.2 +/-    0.68       9.9 +/-    0.68  0.090 / 0.220