Extra error bars in Gnuplot!

When I use gnuplot to plot a set of data I get extra y-axis error bars in some random points. Please try the code below, and note the y error bars in the top left corner that don't have any data corresponding to it. Any idea what might be causing this?

gnuplot >
 set yrange [6:10]
set xrange [6:10]

plot "File.txt" using 1:4:2:3:5:6 with xyerrorbars pointtype 15 title "data"

Where File.txt is:

9.30096  9.07913  9.4471  9.03737  8.84504  9.37652
7.4  7.2  7.6  7.54402  6.78529  7.8388
9.3979  9.30096  9.47707  9.21213  8.89757  9.42807
7.5  7.3  7.7  7.95419  7.69015  8.2787
8.95418  8.84504  9.04134  8.88643  8.7708  9.05302
8.95418  8.69891  9.11387  8.83245  8.71595  9.02525
7.69891  6.99996  7.95418  6.90305  6.77811  7.66271
7.23039  7.20407  7.25523  6.80614  6.78529  7.81949
8.60202  8.46235  8.7075  8.63341  8.46234  8.7708
7.68119  7.51846  7.79927  6.81287  7.80613  8.43131
7.57974  7.4471  7.68119  8.11389  7.60201  8.2787
8.09685  7.99996  8.17602  7.93947  7.81949  8.43131
7.51846  7.3979  7.61274  7.69892  8.91376  9.48708
7.7075  7.67207  7.74029  8.07913  6.78529  7.79234
9.27868  9.25523  9.30096  9.07182  7.46235  7.98222
7.20407  7.07913  7.30096  7.46235  6.79235  7.91903
7.60202  7.47707  7.69891  7.76338  7.97767  8.47707
7.47707  7.30096  7.60202  7.65316  6.54403  6.71596
7.90302  7.69891  8.04134  8.2787  7.53143  8.20407
7.23039  7.04134  7.36168  6.6812  6.76338  7.66271
7.95418  7.77812  8.07913  7.87501  8.11389  8.61273
7.7634  7.61274  7.87501  7.34238  8.6434  8.93444
8.69891  8.60202  8.77808  9.21213  6.79235  8.04134
7.90302  7.69891  8.04134  8.4471  8.30098  8.69891
7.51846  7.47707  7.55624  8.78527  6.7993  6.91377
7.85729  7.62321  8.00856  7.69015  7.51847  8.04134
7.6  7.4  7.8  8.53142  7.74031  8.30098
7.74029  7.69891  7.77812  6.8195  7.99995  8.43131
7.84504  7.60202  7.99996  7.80613  8.99117  9.60308
7.81286  7.69891  7.90302  7.99995  6.93445  7.17604
7.60202  7.47707  7.69891  8.2304  6.64341  6.74814
9.3979  9.30096  9.47707  9.22783  6.70753  7.27871
6.90307  6.84504  6.95418  6.99118  6.80614  6.93947
6.84504  6.69891  6.95418  6.70753  6.76338  7.49131
6.86328  6.81951  6.90307  7.04135  6.71596  7.32217
7.2  7  7.4  6.85121  9.00426  9.37285
6.90307  6.84504  6.95418  6.93947  7.86327  8.4471
6.77812  6.69891  6.84504  7.04135  7.76338  8.36167
6.77812  6.69891  6.84504  6.96374  7.84505  8.4471
8.20  8.1  8.3  9.21213  6.65317  6.69015
7.84504  7.69891  7.95418  8.07913  6.77811  7.07914
7.84504  7.69891  7.95418  8.04134  6.69015  7.20407
6.60202  6.30101  6.77812  8.11389  9.01697  9.60308
6.60202  6.30101  6.77812  6.67205  7.87501  8.47707
6.99996  6.90307  7.07913  6.82603  7.97308  8.54401
6.84504  6.69891  6.95418  6.93947  8.99117  9.51713
8.84504  8.69891  8.95418  6.74032  7.99995  8.17604
7.60202  7.47707  7.69891  9.27869  7.81286  8.43131
9.11  8.95  9.27  8.20407  7.70752  8.34237
9.3979  9.27868  9.49131  8.30098  7.99558  8.55625
7.77812  7.47707  7.95418  9.22005  7.91903  8.46234
7.6  7.4  7.8  8.07913  7.6434  8.14608
7.77812  7.47707  7.95418  8.07913  7.68119  8.11389
7.90302  7.69891  8.04134  7.99995  9.04133  9.60308
9.11  8.95  9.27  8.34237  8.81286  9.04133
7.69891  7.30096  7.90302  8.20407  8.84504  9.37652
7.77812  7.60202  7.90302  7.90304  7.55625  8.14608
9.32216  9.23039  9.3979  7.90304  8.79928  9.22266
9.25523  9.14605  9.34235  9.40306  8.69014  8.98221
8.84504  8.77808  8.90302  8.98671  6.79235  7.92423
8.95418  8.69891  9.11387  9.03737  8.04134  8.39789
7.60202  7.47707  7.69891  7.87501  8.74031  9.04526
9.07913  9.04134  9.11387  8.99117  7.78528  8.25522
8.82  8.79  8.85  8.81286  8.59101  8.74031
7.69891  7.60202  7.77812  7.69892  8.30098  8.69891
7.68119  7.4471  7.83245  7.54402  8.38016  8.74031
7.4313  7.25523  7.55624  8.2304  9.03337  9.35977
9.11387  8.99996  9.20407  8.83245  6.74814  7.38016
8.65317  8.47707  8.77808  8.86327  9.02113  9.42969
7.62321  7.4313  7.75584  7.96374  8.99558  9.58427
8.69891  8.60202  8.77808  8.69014  8.99558  9.42969
8.69891  8.60202  8.77808  8.79928  8.83245  9.22266
9.20407  9.07913  9.30096  8.82602  8.79928  9.04133
8.17602  7.99996  8.30096  8.53142  8.51846  8.54401
8.69891  8.60202  8.77808  8.57973  8.56815  8.59101
8.69891  8.60202  8.77808  9.21213  9.20946  9.21478
7.23039  7.20407  7.25523  7.2304  7.20407  7.25523
8.95418  8.84504  9.04134  9.22005  9.21742  9.22266
9.30096  9.17602  9.3979  9.26001  9.25762  9.26239
9.20407  9.04134  9.32216  9.21213  9.20946  9.21478
9.17602  9.07913  9.25523  8.99117  8.98671  8.99558
9.30096  9.20407  9.38014  8.99117  8.98671  8.99558
9.17602  9.07913  9.25523  8.94442  8.93946  8.94933
7.95418  7.84504  8.04134  7.83246  7.82602  7.8388

Does my question make sense?