PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/23-17:27:30
G01     311.3          29.6                6.9 +/-    0.86      12.2 +/-    0.86  0.130 / 0.150
G10     100.1          44.2                8.9 +/-    0.71      12.1 +/-    0.71  0.100 / 0.120
G11     289.7          26.9                5.2 +/-    1.46       9.8 +/-    1.46  0.330 / 0.290
G14     341.6          69.1                6.7 +/-    0.32       7.2 +/-    0.32  0.130 / 0.250
G22     307.7          22.1                7.8 +/-    1.88      16.3 +/-    1.88  0.090 / 0.120
G25     87.7           15.0                9.9 +/-    1.99      24.5 +/-    1.99  0.080 / 0.100
G31     170.9          59.1                8.9 +/-    0.43      10.2 +/-    0.43  0.040 / 0.040
G32     30.4           56.1                7.9 +/-    1.11       9.3 +/-    1.11  0.030 / 0.030