PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/15-16:28:10
G07     332.3          57.7               11.8 +/-    0.90      13.7 +/-    0.90  0.030 / 0.050
G08     102.9          52.4               13.3 +/-    1.19      16.2 +/-    1.19  0.030 / 0.050
G09     191.7          73.6               14.4 +/-    1.32      14.9 +/-    1.32  0.060 / 0.090
G11     146.5          13.0               13.6 +/-    1.38      35.5 +/-    1.38  0.060 / 0.090
G23     154.1          37.1               14.1 +/-    2.21      21.6 +/-    2.21  0.100 / 0.480
G27     54.7           31.4               10.9 +/-    0.73      18.6 +/-    0.73  0.080 / 0.520
G28     237.5          29.9               13.0 +/-    1.73      22.9 +/-    1.73  0.070 / 0.170
G30     302.6          35.9               12.5 +/-    0.65      19.5 +/-    0.65  0.060 / 0.170