PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/27-17:12:30
G01     310.8          30.0                6.2 +/-    1.28      10.8 +/-    1.28  0.070 / 0.110
G10     100.8          43.8                9.7 +/-    0.67      13.2 +/-    0.67  0.070 / 0.120
G11     289.2          26.9                4.8 +/-    1.82       9.0 +/-    1.82  0.050 / 0.050
G14     342.9          69.0                7.0 +/-    0.34       7.4 +/-    0.34  0.050 / 0.040
G22     308.0          22.7                7.2 +/-    0.94      14.8 +/-    0.94  0.120 / 0.250
G25     87.2           15.2                9.2 +/-    2.03      22.7 +/-    2.03  0.080 / 0.210
G31     170.3          59.9               10.5 +/-    0.51      12.0 +/-    0.51  0.030 / 0.040
G32     31.2           55.6                7.4 +/-    0.83       8.7 +/-    0.83  0.030 / 0.030