PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-20:27:40
G01     299.4          37.4               12.1 +/-    1.20      18.3 +/-    1.20  0.060 / 0.120
G03     309.2          11.4                1.7 +/-   39.26       4.7 +/-   39.26  0.080 / 0.130
G10     113.5          34.9               11.8 +/-    1.36      18.8 +/-    1.36  0.060 / 0.110
G11     273.9          27.7               11.1 +/-    1.51      20.3 +/-    1.51  0.070 / 0.090
G14     12.7           62.8                9.9 +/-    0.69      11.0 +/-    0.69  0.030 / 0.040
G22     312.0          31.6               10.8 +/-    2.23      18.3 +/-    2.23  0.030 / 0.040
G25     74.0           18.3                9.7 +/-    0.97      22.2 +/-    0.97  0.060 / 0.130
G31     160.9          72.2               12.9 +/-    0.50      13.5 +/-    0.50  0.060 / 0.130
G32     43.4           47.6                9.0 +/-    0.63      11.7 +/-    0.63  0.040 / 0.050