PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/31-13:58:10
G03     191.3          22.7                7.6 +/-    2.70      15.7 +/-    2.70  0.090 / 0.190
G07     287.9          35.8                9.5 +/-    1.15      14.8 +/-    1.15  0.080 / 0.130
G08     144.7          25.6               10.8 +/-    3.24      20.8 +/-    3.24  0.070 / 0.090
G09     320.8          61.0                8.4 +/-    0.52       9.5 +/-    0.52  0.050 / 0.080
G16     43.2           39.0                7.3 +/-    0.88      10.8 +/-    0.88  0.150 / 0.460
G23     112.5          77.5                8.6 +/-    1.18       8.8 +/-    1.18  0.130 / 0.460
G26     43.3           11.4                8.7 +/-    4.44      23.6 +/-    4.44  0.200 / 0.230
G27     101.9          32.9               10.7 +/-    1.11      17.8 +/-    1.11  0.150 / 0.320
G30     272.2          11.6                7.4 +/-    7.75      19.9 +/-    7.75  0.030 / 0.030