PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/30-15:58:10
G07     357.6          65.2               12.2 +/-    0.80      13.3 +/-    0.80  0.040 / 0.060
G08     76.0           52.4               12.9 +/-    0.79      15.8 +/-    0.79  0.030 / 0.050
G09     181.1          57.5               13.4 +/-    1.30      15.6 +/-    1.30  0.050 / 0.040
G11     136.5          22.5               13.9 +/-    1.41      28.9 +/-    1.41  0.040 / 0.040
G23     157.9          23.3               13.2 +/-    1.53      26.8 +/-    1.53  0.060 / 0.070
G27     43.9           22.4                9.9 +/-    1.91      20.5 +/-    1.91  0.060 / 0.060
G28     250.8          40.6               15.6 +/-    1.31      22.5 +/-    1.31  0.080 / 0.160
G30     314.2          45.5               12.6 +/-    0.67      16.8 +/-    0.67  0.070 / 0.220