PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/28-19:27:50
G01     306.3          33.7                9.6 +/-    1.85      15.6 +/-    1.85  0.090 / 0.150
G10     106.9          39.9               12.6 +/-    0.95      18.3 +/-    0.95  0.070 / 0.130
G11     282.0          28.0               12.1 +/-    1.06      22.1 +/-    1.06  0.020 / 0.030
G14     358.6          66.5               10.9 +/-    0.57      11.7 +/-    0.57  0.040 / 0.030
G18     118.3          12.0               12.7 +/-    1.96      34.0 +/-    1.96  0.080 / 0.100
G22     309.9          26.3               10.6 +/-    2.14      20.1 +/-    2.14  0.100 / 0.100
G25     81.2           16.9               11.2 +/-    1.25      26.7 +/-    1.25  0.030 / 0.040
G31     168.3          65.2               12.8 +/-    0.42      14.0 +/-    0.42  0.030 / 0.040
G32     36.6           52.2               10.8 +/-    1.12      13.3 +/-    1.12  0.040 / 0.040