PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/16-17:12:50
G01     266.9          40.3               11.2 +/-    1.95      16.3 +/-    1.95  0.090 / 0.230
G03     316.5          35.1                7.0 +/-    1.27      11.0 +/-    1.27  0.110 / 0.180
G10     131.4          14.9               12.4 +/-    1.74      30.8 +/-    1.74  0.040 / 0.030
G11     250.6          19.1               10.0 +/-    1.06      22.5 +/-    1.06  0.040 / 0.040
G14     45.2           49.4                8.6 +/-    0.38      10.9 +/-    0.38  0.040 / 0.060
G22     313.4          56.0                8.4 +/-    1.40       9.9 +/-    1.40  0.040 / 0.060
G25     50.2           16.2                8.2 +/-    1.45      19.9 +/-    1.45  0.140 / 0.100
G26     145.5          27.7               15.5 +/-    2.27      28.6 +/-    2.27  0.100 / 0.090
G31     49.4           70.5                9.8 +/-    0.67      10.4 +/-    0.67  0.210 / 0.200
G32     67.2           30.0                9.3 +/-    0.91      16.2 +/-    0.91  0.160 / 0.240