PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-16:42:30
G07     330.7          57.1               13.1 +/-    0.55      15.3 +/-    0.55  0.030 / 0.040
G08     105.1          52.1               13.7 +/-    0.61      16.9 +/-    0.61  0.030 / 0.040
G09     193.8          74.8               15.1 +/-    0.45      15.6 +/-    0.45  0.070 / 0.090
G11     147.3          12.3               17.3 +/-    3.47      46.0 +/-    3.47  0.060 / 0.080
G23     153.6          37.9               14.7 +/-    0.80      22.1 +/-    0.80  0.040 / 0.040
G27     55.7           31.9               11.1 +/-    1.52      18.7 +/-    1.52  0.040 / 0.040
G28     236.7          29.0               16.9 +/-    2.15      30.2 +/-    2.15  0.060 / 0.080
G30     301.8          35.3               12.5 +/-    1.73      19.8 +/-    1.73  0.060 / 0.080