PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/19-15:12:50
G02     74.2           20.2                9.6 +/-    2.20      21.0 +/-    2.20  0.040 / 0.040
G05     45.8           46.2                7.7 +/-    0.76      10.2 +/-    0.76  0.030 / 0.030
G12     182.4          16.2               11.1 +/-    1.75      26.7 +/-    1.75  0.170 / 0.120
G13     114.6          26.6               11.8 +/-    0.84      22.2 +/-    0.84  0.060 / 0.150
G15     152.8          27.0               14.4 +/-    3.75      26.9 +/-    3.75  0.030 / 0.030
G18     224.1          17.4               10.5 +/-    3.56      24.5 +/-    3.56  0.030 / 0.020
G20     227.9          77.3               10.6 +/-    0.44      10.8 +/-    0.44  0.170 / 0.270
G21     287.5          31.3                9.6 +/-    1.35      16.3 +/-    1.35  0.090 / 0.220
G25     216.9          37.0               10.8 +/-    1.40      16.6 +/-    1.40  0.080 / 0.130
G29     354.6          77.1                8.2 +/-    0.43       8.3 +/-    0.43  0.120 / 0.080