PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/30-18:43:00
G01     317.2          21.7               10.0 +/-    2.03      21.2 +/-    2.03  0.150 / 0.270
G10     86.4           51.1                9.8 +/-    0.71      12.2 +/-    0.71  0.080 / 0.170
G11     299.7          24.5                7.8 +/-    1.53      15.5 +/-    1.53  0.040 / 0.040
G14     311.8          71.0               10.0 +/-    0.71      10.5 +/-    0.71  0.040 / 0.040
G18     106.5          24.0               11.1 +/-    1.73      22.2 +/-    1.73  0.040 / 0.050
G22     302.8          13.6                8.0 +/-    2.58      20.5 +/-    2.58  0.050 / 0.050
G31     176.0          46.4               10.4 +/-    0.78      13.7 +/-    0.78  0.040 / 0.020
G32     14.9           64.3                9.1 +/-    0.56       9.9 +/-    0.56  0.040 / 0.030