PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/14-21:27:50
G01     271.0          40.9               10.8 +/-    2.09      15.5 +/-    2.09  0.060 / 0.050
G03     315.7          29.2                7.2 +/-    1.33      12.8 +/-    1.33  0.060 / 0.050
G10     129.7          17.7               10.1 +/-    1.14      23.6 +/-    1.14  0.020 / 0.020
G11     251.2          20.8                9.7 +/-    3.40      21.0 +/-    3.40  0.030 / 0.020
G14     43.4           50.0                7.8 +/-    0.82       9.9 +/-    0.82  0.050 / 0.080
G22     314.1          50.9                8.3 +/-    1.08      10.3 +/-    1.08  0.050 / 0.070
G25     52.2           16.7                7.6 +/-    2.59      18.1 +/-    2.59  0.040 / 0.050
G26     149.8          24.0               12.9 +/-    2.18      25.9 +/-    2.18  0.050 / 0.050
G31     57.8           76.2                9.9 +/-    0.39      10.2 +/-    0.39  0.110 / 0.120
G32     63.5           33.3                7.7 +/-    1.60      12.6 +/-    1.60  0.130 / 0.130