PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/16-07:27:30
G02     205.1          39.7                4.9 +/-    0.61       7.1 +/-    0.61  0.070 / 0.060
G06     154.5          73.4                6.2 +/-    0.95       6.4 +/-    0.95  0.060 / 0.080
G12     309.9          18.8                3.9 +/-    1.14       8.8 +/-    1.14  0.120 / 0.150
G17     42.8           43.0                3.0 +/-    0.73       4.2 +/-    0.73  0.110 / 0.190
G19     6.8            63.2                2.6 +/-    0.52       2.9 +/-    0.52  0.040 / 0.030
G24     286.8          43.0                3.0 +/-    1.00       4.1 +/-    1.00  0.030 / 0.040
G28     106.3          29.6               -0.1 +/-    1.47      -0.2 +/-    1.47  0.040 / 0.040