PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/27-17:58:10
G02     204.8          32.5               11.4 +/-    1.01      19.0 +/-    1.01  0.100 / 0.100
G03     57.6           9.8                 8.4 +/-    1.16      23.6 +/-    1.16  0.100 / 0.130
G06     155.5          71.1               11.0 +/-    0.66      11.6 +/-    0.66  0.060 / 0.060
G12     309.2          17.9               11.0 +/-    1.79      25.5 +/-    1.79  0.100 / 0.110
G17     40.2           45.7                8.8 +/-    0.91      11.8 +/-    0.91  0.130 / 0.170
G19     10.2           63.0                9.3 +/-    0.41      10.3 +/-    0.41  0.180 / 0.200
G24     298.0          37.9               10.3 +/-    2.48      15.5 +/-    2.48  0.040 / 0.050
G28     104.6          29.8               10.0 +/-    0.99      17.6 +/-    0.99  0.040 / 0.060