PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/17-15:43:00
G01     38.5           11.2                7.3 +/-    3.36      19.8 +/-    3.36  0.110 / 0.200
G02     200.5          11.6               11.4 +/-   14.14      30.6 +/-   14.14  0.130 / 0.190
G06     173.4          46.1                8.0 +/-   13.51      10.6 +/-   13.51  0.140 / 0.390
G13     234.3          17.9               10.2 +/-    2.50      23.6 +/-    2.50  0.100 / 0.490
G15     267.7          10.1                7.0 +/-    1.64      19.5 +/-    1.64  0.080 / 0.200
G17     17.6           63.4                7.6 +/-    0.46       8.4 +/-    0.46  0.070 / 0.210
G19     305.5          72.2               -5.7 +/-   36.12      -6.0 +/-   36.12  0.030 / 0.030
G24     315.0          22.9                5.6 +/-    1.59      11.5 +/-    1.59  0.030 / 0.040
G28     80.2           43.3                8.0 +/-    5.69      11.0 +/-    5.69  0.170 / 0.310
G30     156.5          23.1               12.1 +/-    1.86      24.6 +/-    1.86  0.190 / 0.340