PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/13-19:12:40
G08     269.6          18.9               10.6 +/-    3.06      24.0 +/-    3.06  0.080 / 0.180
G10     55.9           59.8                8.5 +/-    0.82       9.7 +/-    0.82  0.360 / 0.170
G11     313.3          15.3                8.2 +/-    2.35      20.3 +/-    2.35  0.160 / 0.240
G14     262.5          65.0               11.4 +/-    0.74      12.4 +/-    0.74  0.080 / 0.120
G18     90.6           36.2                8.7 +/-    0.79      13.5 +/-    0.79  0.100 / 0.120
G24     41.1           12.7                6.8 +/-    2.46      17.8 +/-    2.46  0.080 / 0.110
G27     232.3          17.0               12.3 +/-    2.20      29.1 +/-    2.20  0.040 / 0.020
G31     180.1          26.5               11.9 +/-    2.21      22.4 +/-    2.21  0.020 / 0.020
G32     326.3          75.0               10.0 +/-    0.36      10.4 +/-    0.36  0.030 / 0.050