PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-17:58:10
G01     100.6          28.6               13.8 +/-    1.51      25.0 +/-    1.51  0.110 / 0.190
G07     115.6          53.7               15.0 +/-    0.34      18.2 +/-    0.34  0.130 / 0.210
G08     41.9           16.7               10.7 +/-    0.69      25.6 +/-    0.69  0.030 / 0.050
G11     81.1           42.7               14.6 +/-    0.34      20.4 +/-    0.34  0.020 / 0.050
G13     304.3          32.1               14.9 +/-    1.18      25.0 +/-    1.18  0.030 / 0.040
G17     209.5          41.7               16.6 +/-    1.27      23.5 +/-    1.27  0.030 / 0.030
G18     73.8           24.8               13.5 +/-    0.85      26.4 +/-    0.85  0.050 / 0.060
G19     211.2          17.2                7.8 +/-   21.80      18.3 +/-   21.80  0.040 / 0.060
G28     331.0          61.7               12.6 +/-    0.75      14.1 +/-    0.75  0.040 / 0.080
G30     61.2           79.6               13.7 +/-    0.78      13.9 +/-    0.78  0.060 / 0.080