PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/23-14:43:10
G02     201.9          21.1               10.0 +/-    2.25      21.5 +/-    2.25  0.100 / 0.220
G06     165.5          59.3                9.9 +/-    0.91      11.3 +/-    0.91  0.100 / 0.210
G12     302.9          11.8                1.1 +/-   21.14       3.0 +/-   21.14  0.110 / 0.100
G13     224.5          10.9                9.8 +/-    2.02      26.9 +/-    2.02  0.080 / 0.110
G17     27.6           55.9                8.4 +/-    1.08       9.9 +/-    1.08  0.200 / 0.480
G19     321.0          70.0                8.8 +/-    0.73       9.3 +/-    0.73  0.270 / 0.480
G24     306.6          33.4                5.3 +/-    1.71       8.7 +/-    1.71  0.130 / 0.320
G28     91.3           38.0                7.5 +/-    1.91      11.3 +/-    1.91  0.150 / 0.340
G30     158.1          13.2               10.4 +/-    2.73      27.1 +/-    2.73  0.030 / 0.040