PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/11-12:43:10
G01     125.5          12.7               -4.7 +/-   17.44     -12.3 +/-   17.44  0.030 / 0.040
G07     64.6           67.3                3.9 +/-    0.46       4.2 +/-    0.46  0.030 / 0.040
G08     48.6           36.4              -10.1 +/-   13.89     -15.6 +/-   13.89  0.110 / 0.710
G11     113.5          34.9               16.0 +/-   12.32      25.5 +/-   12.32  0.110 / 0.620
G13     321.5          11.0               -7.6 +/-   10.59     -20.6 +/-   10.59  0.040 / 0.050
G17     199.4          18.8               14.4 +/-   17.17      32.8 +/-   17.17  0.040 / 0.040
G28     279.2          53.7              -55.4 +/-   56.40     -66.9 +/-   56.40  0.080 / 0.250
G30     332.3          59.8               -6.6 +/-    9.96      -7.5 +/-    9.96  0.130 / 0.250