PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-18:28:00
G01     85.0           32.8               13.7 +/-    0.69      22.7 +/-    0.69  0.120 / 0.320
G07     129.3          42.1               16.2 +/-    0.99      22.8 +/-    0.99  0.100 / 0.280
G11     64.5           38.3               11.9 +/-    0.46      17.8 +/-    0.46  0.030 / 0.080
G13     289.5          37.0               13.9 +/-    1.62      21.2 +/-    1.62  0.050 / 0.060
G15     312.8          11.3               11.4 +/-    2.26      30.9 +/-    2.26  0.020 / 0.040
G17     218.5          55.2               17.1 +/-    1.40      20.4 +/-    1.40  0.030 / 0.040
G18     59.7           23.0               10.8 +/-    0.92      22.2 +/-    0.92  0.050 / 0.060
G19     216.9          29.4               18.5 +/-    2.15      32.9 +/-    2.15  0.040 / 0.060
G28     358.0          61.3               12.0 +/-    1.12      13.5 +/-    1.12  0.030 / 0.060
G30     117.1          72.2               14.3 +/-    0.65      15.0 +/-    0.65  0.040 / 0.060