PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-15:43:10
G03     299.3          65.6                9.0 +/-    0.78       9.8 +/-    0.78  0.080 / 0.130
G14     77.7           31.6                7.9 +/-    1.14      13.4 +/-    1.14  0.080 / 0.130
G16     152.3          37.2               11.5 +/-    1.01      17.6 +/-    1.01  0.180 / 0.410
G18     209.2          13.3               11.7 +/-    2.31      30.4 +/-    2.31  0.190 / 0.370
G22     229.4          75.6                9.3 +/-    0.68       9.5 +/-    0.68  0.030 / 0.030
G23     302.8          34.3                6.0 +/-    1.26       9.7 +/-    1.26  0.030 / 0.030
G26     109.9          51.4               10.7 +/-    0.58      13.2 +/-    0.58  0.080 / 0.130
G31     42.9           38.1                7.2 +/-    1.31      10.9 +/-    1.31  0.090 / 0.110
G32     93.5           10.0                9.3 +/-    1.35      25.9 +/-    1.35  0.040 / 0.050