PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/30-20:27:50
G01     267.7          40.4               11.7 +/-    1.59      17.0 +/-    1.59  0.050 / 0.060
G03     316.2          32.1                9.2 +/-    2.04      15.4 +/-    2.04  0.070 / 0.060
G10     131.1          15.6               12.1 +/-    1.78      29.7 +/-    1.78  0.240 / 0.290
G11     249.4          19.5               12.4 +/-    2.43      27.6 +/-    2.43  0.230 / 0.290
G14     45.9           48.8                8.2 +/-    0.43      10.5 +/-    0.43  0.140 / 0.250
G22     313.6          53.6               10.6 +/-    0.81      12.9 +/-    0.81  0.130 / 0.170
G25     50.3           16.1                7.1 +/-    3.89      17.2 +/-    3.89  0.030 / 0.020
G26     147.6          26.4               14.2 +/-    2.42      26.8 +/-    2.42  0.030 / 0.030
G31     51.4           73.1               10.3 +/-    0.35      10.7 +/-    0.35  0.070 / 0.080
G32     66.0           31.4                7.8 +/-    1.47      13.2 +/-    1.47  0.060 / 0.060