PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-18:57:50
G07     303.2          44.3               13.3 +/-    1.89      18.1 +/-    1.89  0.050 / 0.090
G08     135.9          37.3               17.5 +/-    0.89      26.7 +/-    0.89  0.050 / 0.080
G09     310.9          74.9               12.7 +/-    0.52      13.1 +/-    0.52  0.030 / 0.030
G16     41.7           26.4               11.4 +/-    1.78      21.5 +/-    1.78  0.030 / 0.030
G23     140.6          63.3               15.0 +/-    1.32      16.5 +/-    1.32  0.310 / 0.770
G27     82.3           36.9               13.8 +/-    0.58      21.2 +/-    0.58  0.240 / 0.570
G28     222.7          10.6               -2.5 +/-   26.19      -6.9 +/-   26.19  0.040 / 0.040
G30     284.6          22.4               13.6 +/-    1.51      28.2 +/-    1.51  0.040 / 0.050