PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/27-18:12:30
G07     356.4          64.9               12.6 +/-    0.81      13.8 +/-    0.81  0.080 / 0.070
G08     79.3           53.6               13.9 +/-    0.82      16.8 +/-    0.82  0.080 / 0.060
G09     182.3          58.7               15.5 +/-    0.53      17.8 +/-    0.53  0.040 / 0.040
G11     137.6          21.9               14.9 +/-    1.53      31.3 +/-    1.53  0.030 / 0.040
G23     157.4          22.6               14.2 +/-    0.88      29.4 +/-    0.88  0.050 / 0.100
G27     44.1           22.5                9.8 +/-    2.81      20.3 +/-    2.81  0.070 / 0.100
G28     250.5          40.5               16.2 +/-    1.47      23.4 +/-    1.47  0.040 / 0.040
G30     314.7          46.1               12.7 +/-    0.63      16.9 +/-    0.63  0.040 / 0.040