PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-17:58:00
G01     101.1          28.4               14.0 +/-    1.08      25.4 +/-    1.08  0.090 / 0.380
G07     115.0          54.1               15.8 +/-    0.73      19.0 +/-    0.73  0.280 / 0.260
G08     41.9           17.1               11.7 +/-    2.78      27.6 +/-    2.78  0.030 / 0.040
G11     81.7           42.8               15.2 +/-    0.86      21.2 +/-    0.86  0.030 / 0.040
G13     304.7          31.9               13.5 +/-    1.34      22.8 +/-    1.34  0.030 / 0.020
G17     209.2          41.2               16.8 +/-    1.08      24.0 +/-    1.08  0.030 / 0.020
G18     74.3           24.8               14.7 +/-    1.58      28.9 +/-    1.58  0.080 / 0.120
G19     211.1          16.7               12.0 +/-   15.92      28.7 +/-   15.92  0.080 / 0.110
G28     330.1          61.7               13.9 +/-    0.53      15.5 +/-    0.53  0.090 / 0.150
G30     58.5           79.6               15.9 +/-    0.50      16.2 +/-    0.50  0.060 / 0.140