PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/28-18:42:50
G01     318.6          18.7               10.9 +/-    1.74      24.7 +/-    1.74  0.110 / 0.240
G08     257.0          12.6               10.2 +/-    5.63      26.8 +/-    5.63  0.110 / 0.240
G10     80.9           53.2               12.5 +/-    0.99      15.2 +/-    0.99  0.080 / 0.050
G11     303.1          22.9               10.8 +/-    0.97      22.1 +/-    0.97  0.060 / 0.080
G14     300.0          70.7               11.8 +/-    0.60      12.4 +/-    0.60  0.030 / 0.030
G18     103.5          26.6               11.0 +/-    0.99      20.8 +/-    0.99  0.030 / 0.040
G22     301.0          11.0                2.1 +/-    8.44       5.8 +/-    8.44  0.030 / 0.020
G31     176.9          42.2               12.7 +/-    0.59      17.8 +/-    0.59  0.030 / 0.020
G32     8.2            67.0               11.7 +/-    0.44      12.6 +/-    0.44  0.340 / 0.310