PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-21:58:00
G01     247.3          33.3               12.5 +/-    2.06      20.4 +/-    2.06  0.030 / 0.030
G03     315.0          47.1                9.5 +/-    0.85      12.4 +/-    0.85  0.030 / 0.020
G11     235.1          10.9               12.2 +/-    4.18      33.4 +/-    4.18  0.140 / 0.230
G14     64.1           38.6                8.1 +/-    0.75      12.1 +/-    0.75  0.110 / 0.250
G16     164.2          19.5               13.4 +/-    1.62      29.9 +/-    1.62  0.030 / 0.040
G22     300.0          68.5               10.6 +/-    0.49      11.3 +/-    0.49  0.040 / 0.040
G23     289.0          20.9               11.1 +/-    2.51      23.9 +/-    2.51  0.040 / 0.070
G26     135.2          40.3               13.2 +/-    1.50      19.1 +/-    1.50  0.040 / 0.070
G31     39.8           56.8                8.6 +/-    0.62      10.0 +/-    0.62  0.100 / 0.130
G32     80.0           21.4                8.0 +/-    1.73      17.0 +/-    1.73  0.090 / 0.150