PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/23-19:27:50
G01     246.7          33.0               11.4 +/-    1.04      18.8 +/-    1.04  0.040 / 0.050
G03     314.7          49.4                9.5 +/-    1.00      12.1 +/-    1.00  0.040 / 0.060
G11     235.8          10.6               10.1 +/-    1.77      27.8 +/-    1.77  0.030 / 0.050
G14     64.0           39.0                9.7 +/-    0.87      14.3 +/-    0.87  0.030 / 0.050
G16     162.5          21.2               13.2 +/-    1.70      28.3 +/-    1.70  0.090 / 0.230
G22     297.7          70.1               10.0 +/-    0.49      10.5 +/-    0.49  0.070 / 0.240
G23     289.9          22.2               10.5 +/-    1.65      21.9 +/-    1.65  0.080 / 0.120
G26     132.7          41.3               13.0 +/-    1.02      18.5 +/-    1.02  0.090 / 0.130
G31     40.2           54.5                7.8 +/-    0.67       9.3 +/-    0.67  0.050 / 0.120
G32     80.9           20.2                8.8 +/-    0.84      19.2 +/-    0.84  0.040 / 0.100