PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/06-19:43:00
G01     91.1           31.7               16.5 +/-    0.41      27.9 +/-    0.41  0.120 / 0.310
G07     124.8          46.7               14.2 +/-    1.45      18.7 +/-    1.45  0.140 / 0.420
G08     42.5           10.8                9.8 +/-    1.50      26.8 +/-    1.50  0.040 / 0.060
G11     70.8           40.8               14.3 +/-    0.49      20.6 +/-    0.49  0.030 / 0.060
G13     295.7          35.6               12.1 +/-    1.10      19.0 +/-    1.10  0.100 / 0.140
G17     214.7          49.0               14.3 +/-    1.08      18.3 +/-    1.08  0.100 / 0.100
G18     65.0           24.2               13.0 +/-    0.97      25.9 +/-    0.97  0.040 / 0.100
G19     214.4          25.2               14.6 +/-    3.78      28.4 +/-    3.78  0.040 / 0.090
G28     348.3          61.8               10.9 +/-    0.46      12.2 +/-    0.46  0.030 / 0.040
G30     103.7          75.4               13.6 +/-    0.71      14.0 +/-    0.71  0.030 / 0.030