PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/27-17:57:40
G01     289.8          40.3                7.4 +/-    0.94      10.7 +/-    0.94  0.040 / 0.090
G03     312.6          19.5                7.8 +/-    2.39      17.3 +/-    2.39  0.060 / 0.070
G10     120.4          28.5                9.5 +/-    0.90      17.1 +/-    0.90  0.070 / 0.120
G11     266.5          25.6               10.6 +/-    2.35      20.4 +/-    2.35  0.060 / 0.130
G14     24.0           58.9                7.9 +/-    0.50       9.1 +/-    0.50  0.030 / 0.020
G22     314.0          39.7                6.1 +/-    1.72       8.9 +/-    1.72  0.030 / 0.030
G25     66.4           19.1                8.9 +/-    0.79      19.9 +/-    0.79  0.080 / 0.110
G26     156.2          13.8               10.6 +/-    1.20      27.1 +/-    1.20  0.090 / 0.110
G31     124.2          79.4               10.3 +/-    0.80      10.5 +/-    0.80  0.040 / 0.090
G32     52.0           41.2                8.1 +/-    1.66      11.6 +/-    1.66  0.050 / 0.080