PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/25-19:43:00
G01     236.8          26.2               12.8 +/-    1.61      24.3 +/-    1.61  0.040 / 0.040
G03     307.6          59.4               11.1 +/-    1.27      12.7 +/-    1.27  0.040 / 0.040
G14     74.3           32.8               10.4 +/-    1.16      17.2 +/-    1.16  0.080 / 0.150
G16     157.4          31.2               14.9 +/-    0.76      25.5 +/-    0.76  0.070 / 0.150
G22     263.9          75.8               12.9 +/-    0.84      13.3 +/-    0.84  0.070 / 0.130
G23     297.8          28.8                9.1 +/-    2.18      16.4 +/-    2.18  0.080 / 0.160
G26     120.0          48.8               13.6 +/-    1.54      17.4 +/-    1.54  0.040 / 0.050
G31     41.2           44.3                9.3 +/-    0.48      12.7 +/-    0.48  0.030 / 0.060
G32     89.4           13.8               11.1 +/-    1.46      28.5 +/-    1.46  0.090 / 0.150