PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/02-16:12:50
G08     106.4          50.0               10.1 +/-    0.87      12.8 +/-    0.87  0.220 / 0.430
G09     208.8          79.4                9.1 +/-    0.50       9.3 +/-    0.50  0.210 / 0.470
G11     147.8          11.1                8.5 +/-   12.95      23.2 +/-   12.95  0.070 / 0.170
G16     45.1           13.4                6.5 +/-    1.24      16.9 +/-    1.24  0.080 / 0.220
G23     153.6          46.4               10.4 +/-    0.63      13.8 +/-    0.63  0.050 / 0.060
G27     61.6           34.9                7.4 +/-    0.46      11.7 +/-    0.46  0.050 / 0.080
G28     232.5          21.3               10.5 +/-    1.64      22.5 +/-    1.64  0.080 / 0.250
G30     299.2          33.8                8.3 +/-    1.75      13.4 +/-    1.75  0.110 / 0.240