PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/26-02:27:30
G02     31.4           57.1               10.2 +/-    0.75      11.9 +/-    0.75  0.030 / 0.030
G05     141.4          59.8               13.7 +/-    1.00      15.6 +/-    1.00  0.020 / 0.050
G06     52.1           18.3                7.5 +/-    1.32      17.2 +/-    1.32  0.040 / 0.050
G12     205.0          71.6               12.4 +/-    0.49      13.0 +/-    0.49  0.040 / 0.060
G19     97.1           12.7               11.1 +/-    1.31      29.1 +/-    1.31  0.050 / 0.050
G25     302.3          50.4               10.4 +/-    0.62      13.0 +/-    0.62  0.040 / 0.060
G29     304.7          25.0               11.8 +/-    1.39      23.0 +/-    1.39  0.060 / 0.050