PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/17-16:42:50
G07     349.1          63.1               10.7 +/-    0.91      11.8 +/-    0.91  0.030 / 0.060
G08     84.3           53.6               11.3 +/-    0.80      13.6 +/-    0.80  0.030 / 0.060
G09     183.1          62.5               13.9 +/-    1.01      15.5 +/-    1.01  0.090 / 0.090
G11     139.7          19.6               13.2 +/-    1.87      29.3 +/-    1.87  0.080 / 0.100
G23     156.9          26.8               12.4 +/-    1.30      23.3 +/-    1.30  0.050 / 0.130
G27     46.5           25.3               11.2 +/-    1.17      21.8 +/-    1.17  0.070 / 0.130
G28     246.6          37.7               15.7 +/-    1.73      23.7 +/-    1.73  0.040 / 0.050
G30     310.9          42.8               10.0 +/-    1.11      14.0 +/-    1.11  0.040 / 0.040