PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-19:57:50
G01     311.6          29.2               10.1 +/-    0.74      17.9 +/-    0.74  0.100 / 0.250
G10     99.3           44.7               10.4 +/-    0.55      14.0 +/-    0.55  0.090 / 0.200
G11     289.2          27.5               10.0 +/-    1.62      18.5 +/-    1.62  0.090 / 0.180
G14     342.7          69.2               10.0 +/-    0.46      10.6 +/-    0.46  0.140 / 0.190
G18     113.7          17.1               12.1 +/-    1.66      28.5 +/-    1.66  0.040 / 0.040
G22     307.2          20.7               10.7 +/-    3.64      23.2 +/-    3.64  0.030 / 0.030
G25     87.7           14.7               11.8 +/-    2.02      29.5 +/-    2.02  0.040 / 0.040
G31     173.4          57.1               14.6 +/-    0.38      17.0 +/-    0.38  0.040 / 0.040
G32     28.3           57.4                8.8 +/-    1.03      10.2 +/-    1.03  0.040 / 0.030