PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/12-10:27:50
G02     202.1          32.9                7.2 +/-    1.80      11.9 +/-    1.80  0.060 / 0.110
G03     60.5           9.4               -15.2 +/-   18.49     -42.9 +/-   18.49  0.070 / 0.110
G06     169.8          63.9                6.8 +/-    0.76       7.4 +/-    0.76  0.070 / 0.080
G12     306.1          12.3                3.3 +/-    3.30       8.9 +/-    3.30  0.050 / 0.090
G17     35.6           49.6                3.5 +/-    1.18       4.4 +/-    1.18  0.260 / 0.280
G19     0.2            65.9                4.1 +/-    0.61       4.5 +/-    0.61  0.330 / 0.310
G24     302.0          35.7                3.7 +/-    1.68       5.8 +/-    1.68  0.040 / 0.040
G28     100.7          32.2                5.6 +/-    0.73       9.5 +/-    0.73  0.040 / 0.040