PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/15-20:28:20
G01     302.9          35.7               10.3 +/-    1.29      16.2 +/-    1.29  0.060 / 0.120
G10     110.5          37.3                9.1 +/-    1.04      13.8 +/-    1.04  0.060 / 0.130
G11     277.5          28.1                9.4 +/-    1.55      17.2 +/-    1.55  0.060 / 0.100
G14     6.7            64.6                7.5 +/-    0.80       8.2 +/-    0.80  0.060 / 0.110
G22     311.0          28.9                6.1 +/-    1.08      10.9 +/-    1.08  0.030 / 0.040
G25     77.3           17.7                9.3 +/-    1.61      21.6 +/-    1.61  0.030 / 0.050
G31     165.9          68.7               12.6 +/-    1.34      13.4 +/-    1.34  0.040 / 0.050
G32     40.0           50.0                9.3 +/-    0.47      11.7 +/-    0.47  0.070 / 0.050