PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/22-16:12:40
G03     290.8          68.7                9.1 +/-    0.35       9.7 +/-    0.35  0.080 / 0.160
G14     81.4           29.2                9.7 +/-    1.31      17.3 +/-    1.31  0.080 / 0.160
G16     149.8          40.9               12.9 +/-    1.27      18.5 +/-    1.27  0.030 / 0.030
G18     136.6          -39.6              37.0 +/-    2.87      54.1 +/-    2.87  0.030 / 0.040
G22     217.6          73.2               10.1 +/-    0.51      10.5 +/-    0.51  0.060 / 0.090
G23     305.6          36.6                9.5 +/-    1.81      14.6 +/-    1.81  0.060 / 0.080
G26     103.5          52.9               10.8 +/-    0.78      13.1 +/-    0.78  0.120 / 0.320
G31     44.0           34.8                8.4 +/-    1.19      13.3 +/-    1.19  0.380 / 0.400