PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/23-18:58:10
G01     262.2          39.2               11.6 +/-    1.00      17.0 +/-    1.00  0.040 / 0.050
G03     316.6          37.0               10.4 +/-    0.80      15.9 +/-    0.80  0.040 / 0.050
G10     133.3          12.1               10.3 +/-    1.40      27.5 +/-    1.40  0.040 / 0.040
G11     246.6          17.4               10.3 +/-    1.42      24.1 +/-    1.42  0.020 / 0.050
G14     50.0           46.8                8.4 +/-    0.88      11.1 +/-    0.88  0.090 / 0.280
G22     312.0          58.3               10.3 +/-    0.95      11.9 +/-    0.95  0.080 / 0.270
G25     47.0           14.8                6.5 +/-    0.94      16.2 +/-    0.94  0.070 / 0.090
G26     143.8          30.4               12.7 +/-    0.82      22.1 +/-    0.82  0.070 / 0.090
G31     45.5           67.9                9.9 +/-    0.58      10.6 +/-    0.58  0.050 / 0.090
G32     69.9           28.3                8.5 +/-    0.88      15.5 +/-    0.88  0.050 / 0.080