PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/13-20:12:40
G01     312.1          28.8                8.6 +/-    0.90      15.5 +/-    0.90  0.090 / 0.220
G10     98.6           45.2               10.1 +/-    0.66      13.5 +/-    0.66  0.130 / 0.210
G11     289.7          27.5                8.5 +/-    2.07      15.8 +/-    2.07  0.090 / 0.250
G14     341.3          69.4                9.4 +/-    0.50       9.9 +/-    0.50  0.110 / 0.210
G18     113.3          17.6               10.5 +/-    1.44      24.4 +/-    1.44  0.030 / 0.030
G22     306.9          20.2                8.3 +/-    2.80      18.3 +/-    2.80  0.050 / 0.030
G25     88.2           14.5               11.4 +/-    2.30      28.8 +/-    2.30  0.020 / 0.030
G31     173.9          56.3               12.2 +/-    0.54      14.4 +/-    0.54  0.030 / 0.030
G32     27.4           57.9                7.9 +/-    0.80       9.1 +/-    0.80  0.120 / 0.110