PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-19:43:00
G01     51.0           26.1               12.3 +/-    1.39      23.4 +/-    1.39  0.180 / 0.390
G06     177.3          24.9               16.4 +/-    1.75      32.1 +/-    1.75  0.120 / 0.360
G07     146.0          13.8               17.2 +/-    3.41      44.1 +/-    3.41  0.200 / 0.340
G11     45.1           16.5               10.5 +/-    2.05      25.1 +/-    2.05  0.150 / 0.350
G13     251.7          30.9               15.8 +/-    1.49      27.1 +/-    1.49  0.050 / 0.060
G15     285.4          15.6               12.3 +/-    1.49      30.1 +/-    1.49  0.040 / 0.070
G17     295.2          77.8               13.9 +/-    0.91      14.2 +/-    0.91  0.120 / 0.360
G19     244.3          57.4               15.7 +/-    0.96      18.3 +/-    0.96  0.110 / 0.380
G28     51.3           53.2               12.3 +/-    0.36      15.0 +/-    0.36  0.030 / 0.030
G30     149.1          41.8               15.2 +/-    0.96      21.4 +/-    0.96  0.030 / 0.040