PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/07-20:13:00
G02     22.6           63.4               11.3 +/-    0.69      12.5 +/-    0.69  0.030 / 0.070
G05     155.1          53.9               13.6 +/-    0.42      16.4 +/-    0.42  0.030 / 0.050
G06     50.7           20.7                9.5 +/-    2.45      20.4 +/-    2.45  0.050 / 0.060
G12     208.7          73.9               11.8 +/-    0.75      12.3 +/-    0.75  0.080 / 0.050
G19     95.8           12.0               10.9 +/-    1.98      29.0 +/-    1.98  0.040 / 0.070
G20     197.2          21.0               12.6 +/-    1.52      27.0 +/-    1.52  0.030 / 0.030
G25     301.3          53.5               11.5 +/-    1.22      13.9 +/-    1.22  0.030 / 0.040
G29     303.6          25.0                9.9 +/-    1.15      19.3 +/-    1.15  0.030 / 0.040