PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/17-17:58:10
G02     59.3           34.4                7.7 +/-    1.24      12.4 +/-    1.24  0.030 / 0.040
G05     57.0           61.9                8.9 +/-    0.86       9.9 +/-    0.86  0.030 / 0.050
G12     182.0          27.8               10.3 +/-    2.64      18.9 +/-    2.64  0.090 / 0.350
G13     125.9          16.8               11.7 +/-    1.57      27.9 +/-    1.57  0.110 / 0.310
G15     166.7          11.6                9.6 +/-   19.27      26.0 +/-   19.27  0.060 / 0.120
G21     273.4          18.7                9.2 +/-    1.32      21.0 +/-    1.32  0.050 / 0.130
G25     229.8          49.7               10.1 +/-    0.79      12.8 +/-    0.79  0.040 / 0.060
G29     329.4          56.1                7.9 +/-    0.63       9.3 +/-    0.63  0.050 / 0.060