PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/21-19:12:50
G01     258.8          38.2               13.2 +/-    3.36      19.7 +/-    3.36  0.060 / 0.050
G03     316.6          39.4               10.0 +/-    1.02      14.8 +/-    1.02  0.050 / 0.040
G10     134.6          9.9                12.8 +/-    2.07      35.7 +/-    2.07  0.020 / 0.030
G11     244.2          16.1               13.0 +/-    2.58      31.4 +/-    2.58  0.030 / 0.040
G14     53.0           45.2               11.4 +/-    0.76      15.3 +/-    0.76  0.130 / 0.200
G22     310.5          60.7               12.2 +/-    0.81      13.8 +/-    0.81  0.090 / 0.140
G25     44.8           13.6                7.7 +/-    3.40      19.9 +/-    3.40  0.070 / 0.110
G26     142.0          32.6               13.0 +/-    1.33      21.7 +/-    1.33  0.080 / 0.070
G31     43.4           65.3                9.4 +/-    0.43      10.2 +/-    0.43  0.070 / 0.070
G32     72.1           26.7                9.5 +/-    1.61      17.8 +/-    1.61  0.090 / 0.100