PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/31-04:57:40
G01     318.8          18.1                5.2 +/-    0.76      11.9 +/-    0.76  0.100 / 0.160
G08     255.7          13.2                4.8 +/-   16.37      12.5 +/-   16.37  0.130 / 0.200
G10     78.6           54.2                0.2 +/-    9.40       0.2 +/-    9.40  0.040 / 0.060
G11     301.2          25.1                6.0 +/-    1.48      11.7 +/-    1.48  0.050 / 0.060
G14     302.1          71.5                5.0 +/-    0.78       5.3 +/-    0.78  0.180 / 0.380
G18     100.9          30.7               -9.2 +/-   51.22     -16.0 +/-   51.22  0.130 / 0.400
G22     300.5          11.3                2.9 +/-    8.28       8.0 +/-    8.28  0.030 / 0.040
G31     176.1          41.9               12.0 +/-    9.92      16.9 +/-    9.92  0.030 / 0.050
G32     4.9            68.0                8.7 +/-    5.57       9.3 +/-    5.57  0.050 / 0.080