PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/05-10:27:30
G02     239.4          76.5                3.8 +/-    0.41       3.9 +/-    0.41  0.160 / 0.150
G05     172.8          14.7                4.1 +/-    1.67      10.2 +/-    1.67  0.150 / 0.190
G06     40.3           64.8                2.4 +/-    0.57       2.7 +/-    0.57  0.030 / 0.040
G12     321.2          49.3                2.7 +/-    0.42       3.5 +/-    0.42  0.030 / 0.040
G17     71.0           21.9                3.0 +/-    2.70       6.3 +/-    2.70  0.060 / 0.120
G19     57.4           38.2                2.7 +/-    0.80       4.1 +/-    0.80  0.100 / 0.120
G24     248.1          35.6                4.7 +/-    2.27       7.4 +/-    2.27  0.410 / 0.390
G25     316.6          11.9               -5.3 +/-   21.39     -14.2 +/-   21.39  0.210 / 0.200