PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/14-21:58:00
G01     253.5          36.3               11.4 +/-    2.21      17.6 +/-    2.21  0.040 / 0.040
G03     316.2          41.7                8.9 +/-    0.80      12.6 +/-    0.80  0.030 / 0.040
G11     239.4          13.9                8.9 +/-    2.08      22.8 +/-    2.08  0.030 / 0.030
G14     58.4           41.8                6.8 +/-    1.62       9.7 +/-    1.62  0.030 / 0.030
G22     307.3          63.6                8.3 +/-    0.78       9.2 +/-    0.78  0.080 / 0.100
G23     284.8          17.5               11.3 +/-    1.69      26.5 +/-    1.69  0.070 / 0.130
G25     41.0           11.1                8.4 +/-    4.14      22.9 +/-    4.14  0.060 / 0.070
G26     140.3          35.6               12.5 +/-    1.26      19.7 +/-    1.26  0.050 / 0.070
G31     41.0           62.7                8.0 +/-    0.77       8.9 +/-    0.77  0.050 / 0.050
G32     75.3           24.9                8.5 +/-    1.21      16.6 +/-    1.21  0.060 / 0.060