PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/17-21:27:50
G01     319.0          17.8               10.7 +/-    1.64      24.9 +/-    1.64  0.100 / 0.160
G08     257.0          13.2                8.3 +/-    5.64      21.5 +/-    5.64  0.160 / 0.140
G10     78.8           54.0                8.8 +/-    1.50      10.6 +/-    1.50  0.050 / 0.060
G11     303.2          23.3                9.1 +/-    1.13      18.6 +/-    1.13  0.040 / 0.070
G14     298.7          70.9                9.6 +/-    0.43      10.1 +/-    0.43  0.030 / 0.020
G18     102.1          28.1               11.3 +/-    0.54      20.6 +/-    0.54  0.020 / 0.020
G31     178.9          39.2               13.4 +/-    0.72      19.8 +/-    0.72  0.040 / 0.040
G32     2.5            68.5                9.5 +/-    0.45      10.1 +/-    0.45  0.050 / 0.040