PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/16-15:42:40
G01     63.2           31.5                9.0 +/-    1.69      15.3 +/-    1.69  0.050 / 0.040
G07     141.0          25.0               13.7 +/-    1.34      26.8 +/-    1.34  0.050 / 0.040
G11     49.4           25.5                7.8 +/-    3.04      15.1 +/-    3.04  0.060 / 0.140
G13     265.8          36.2               12.6 +/-    1.35      19.6 +/-    1.35  0.080 / 0.120
G15     298.8          15.1                7.4 +/-    2.07      18.5 +/-    2.07  0.140 / 0.320
G17     249.2          74.4               13.1 +/-    0.31      13.6 +/-    0.31  0.150 / 0.380
G18     44.0           14.4                7.4 +/-    1.82      18.6 +/-    1.82  0.090 / 0.100
G19     229.4          45.2               14.2 +/-    1.78      19.1 +/-    1.78  0.080 / 0.120
G28     30.9           57.6               13.7 +/-    0.72      15.9 +/-    0.72  0.060 / 0.090
G30     141.8          56.1               13.7 +/-    0.66      16.1 +/-    0.66  0.090 / 0.050