PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/10-10:27:40
G02     287.5          82.1                4.9 +/-    0.82       5.0 +/-    0.82  0.100 / 0.130
G05     169.1          23.1                3.3 +/-    3.36       6.6 +/-    3.36  0.080 / 0.120
G06     38.6           55.7                4.1 +/-    0.77       4.9 +/-    0.77  0.110 / 0.130
G12     320.1          58.7                5.0 +/-    0.52       5.7 +/-    0.52  0.080 / 0.200
G17     78.5           16.5                2.6 +/-    1.58       6.3 +/-    1.58  0.020 / 0.030
G19     66.3           32.5                2.7 +/-    1.75       4.6 +/-    1.75  0.040 / 0.030
G24     238.6          30.1                5.6 +/-    2.76       9.8 +/-    2.76  0.030 / 0.030
G25     317.8          19.8                3.0 +/-    2.10       6.5 +/-    2.10  0.040 / 0.020