PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/12-19:58:00
G01     316.9          22.2               10.5 +/-    2.62      21.9 +/-    2.62  0.130 / 0.300
G10     87.3           50.7               11.0 +/-    1.02      13.7 +/-    1.02  0.080 / 0.190
G11     298.6          25.1                9.7 +/-    1.19      19.0 +/-    1.19  0.050 / 0.050
G14     315.1          71.1               10.2 +/-    0.40      10.7 +/-    0.40  0.040 / 0.050
G18     106.9          23.8               11.8 +/-    2.03      23.6 +/-    2.03  0.260 / 0.270
G22     303.0          13.8               10.1 +/-    2.92      25.9 +/-    2.92  0.230 / 0.230
G25     96.2           10.9               11.1 +/-   15.56      30.4 +/-   15.56  0.060 / 0.030
G31     176.6          46.4               14.0 +/-    0.76      18.6 +/-    0.76  0.060 / 0.040
G32     14.9           64.2               10.0 +/-    0.48      11.0 +/-    0.48  0.120 / 0.170