PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-19:12:30
G07     324.6          54.6               12.8 +/-    1.29      15.4 +/-    1.29  0.040 / 0.080
G08     115.3          50.2               15.9 +/-    0.91      20.0 +/-    0.91  0.040 / 0.080
G09     209.2          79.4               13.8 +/-    0.43      14.1 +/-    0.43  0.160 / 0.500
G16     45.4           10.8               10.2 +/-    2.63      27.8 +/-    2.63  0.150 / 0.530
G23     152.3          43.8               14.4 +/-    1.17      19.8 +/-    1.17  0.040 / 0.070
G27     60.0           33.8               12.9 +/-    0.75      21.0 +/-    0.75  0.050 / 0.070
G28     233.5          25.7               15.6 +/-    2.53      30.0 +/-    2.53  0.080 / 0.180
G30     299.0          33.6               12.1 +/-    1.17      19.8 +/-    1.17  0.070 / 0.180