PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/27-17:12:50
G02     82.9           13.6               10.7 +/-    1.06      27.6 +/-    1.06  0.040 / 0.080
G05     44.6           36.2                9.4 +/-    0.80      14.5 +/-    0.80  0.040 / 0.080
G13     102.5          32.9               13.3 +/-    0.80      21.9 +/-    0.80  0.100 / 0.400
G15     145.1          36.9               13.8 +/-    0.67      21.2 +/-    0.67  0.120 / 0.430
G18     230.4          26.9               12.5 +/-    0.89      23.5 +/-    0.89  0.090 / 0.110
G20     321.6          85.0               11.0 +/-    0.30      11.0 +/-    0.30  0.070 / 0.120
G21     297.0          37.2               11.5 +/-    1.07      17.5 +/-    1.07  0.070 / 0.160
G25     208.5          26.2               13.3 +/-    1.00      25.4 +/-    1.00  0.090 / 0.150
G26     310.8          15.2                9.6 +/-    1.85      23.8 +/-    1.85  0.030 / 0.030
G29     83.5           84.8               11.3 +/-    0.66      11.4 +/-    0.66  0.030 / 0.030