PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/16-09:43:00
G02     239.7          76.7                5.2 +/-    0.35       5.3 +/-    0.35  0.110 / 0.140
G05     172.5          15.0                3.4 +/-    1.07       8.5 +/-    1.07  0.110 / 0.130
G06     40.1           65.6                4.2 +/-    0.70       4.6 +/-    0.70  0.080 / 0.110
G12     321.2          49.2                3.7 +/-    0.35       4.7 +/-    0.35  0.060 / 0.120
G17     70.9           22.2                4.9 +/-    1.57      10.2 +/-    1.57  0.030 / 0.040
G19     57.3           38.3                4.2 +/-    0.92       6.3 +/-    0.92  0.030 / 0.040
G24     248.0          35.6                5.2 +/-    2.25       8.2 +/-    2.25  0.410 / 0.380
G25     316.6          11.7               -4.7 +/-   23.55     -12.8 +/-   23.55  0.430 / 0.300