append to existing rows based on conditions

[OldStudent]

I would like to append rows to existing rows based on simple conditions.
If the saccade number in the second sheet resets to one, I would like to append it to the original sheet, starting with the next fixation

Sheet #1
[TABLE="width: 500"]
<tbody>[TR]
[TD]Fixation[/TD]
[TD]#[/TD]
[TD]XDAT[/TD]
[/TR]
[TR]
[TD]1[/TD]
[TD]1[/TD]
[TD]200[/TD]
[/TR]
[TR]
[TD]1[/TD]
[TD]2[/TD]
[TD]200[/TD]
[/TR]
[TR]
[TD]1[/TD]
[TD]3[/TD]
[TD]200[/TD]
[/TR]
[TR]
[TD]1[/TD]
[TD]4[/TD]
[TD]200[/TD]
[/TR]
[TR]
[TD]2[/TD]
[TD]5[/TD]
[TD]200[/TD]
[/TR]
[TR]
[TD]2[/TD]
[TD]6[/TD]
[TD]200[/TD]
[/TR]
[TR]
[TD]2[/TD]
[TD]7[/TD]
[TD]200[/TD]
[/TR]
[TR]
[TD]2[/TD]
[TD]8[/TD]
[TD]200[/TD]
[/TR]
[TR]
[TD]3[/TD]
[TD]9[/TD]
[TD]200[/TD]
[/TR]
[TR]
[TD]3[/TD]
[TD]10[/TD]
[TD]200[/TD]
[/TR]
</tbody>[/TABLE]

Sheet #2
[TABLE="width: 500"]
<tbody>[TR]
[TD]saccade[/TD]
[TD]Data[/TD]
[/TR]
[TR]
[TD]1[/TD]
[TD]135[/TD]
[/TR]
[TR]
[TD]2[/TD]
[TD]145[/TD]
[/TR]
[TR]
[TD]1[/TD]
[TD]156[/TD]
[/TR]
[TR]
[TD]2[/TD]
[TD]145[/TD]
[/TR]
[TR]
[TD]3[/TD]
[TD]135[/TD]
[/TR]
[TR]
[TD]1[/TD]
[TD]130[/TD]
[/TR]
[TR]
[TD]1[/TD]
[TD]120[/TD]
[/TR]
[TR]
[TD]2[/TD]
[TD]125[/TD]
[/TR]
[TR]
[TD]1[/TD]
[TD]130[/TD]
[/TR]
[TR]
[TD]2[/TD]
[TD]140[/TD]
[/TR]
</tbody>[/TABLE]

DESIRED OUTCOME

[TABLE="width: 500"]
<tbody>[TR]
[TD][TABLE="width: 500"]
<tbody>[TR]
[TD]Fixation[/TD]
[TD]#[/TD]
[TD]XDAT[/TD]
[TD]saccade[/TD]
[TD]data[/TD]
[/TR]
[TR]
[TD]1[/TD]
[TD]1[/TD]
[TD]200[/TD]
[TD]1[/TD]
[TD]135[/TD]
[/TR]
[TR]
[TD]1[/TD]
[TD]2[/TD]
[TD]200[/TD]
[TD]2[/TD]
[TD]145[/TD]
[/TR]
[TR]
[TD]1[/TD]
[TD]3[/TD]
[TD]200[/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]1[/TD]
[TD]4[/TD]
[TD]200[/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]2[/TD]
[TD]5[/TD]
[TD]200[/TD]
[TD]1[/TD]
[TD]156[/TD]
[/TR]
[TR]
[TD]2[/TD]
[TD]6[/TD]
[TD]200[/TD]
[TD]2[/TD]
[TD]145[/TD]
[/TR]
[TR]
[TD]2[/TD]
[TD]7[/TD]
[TD]200[/TD]
[TD]3[/TD]
[TD]135[/TD]
[/TR]
[TR]
[TD]2[/TD]
[TD]8[/TD]
[TD]200[/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]3[/TD]
[TD]9[/TD]
[TD]200[/TD]
[TD]1[/TD]
[TD]130[/TD]
[/TR]
[TR]
[TD]3[/TD]
[TD]10[/TD]
[TD]200[/TD]
[TD][/TD]
[TD][/TD]
[/TR]
</tbody>[/TABLE]
[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
</tbody>[/TABLE]

I have tried using an if and statement, but have had no luck so far.

Thank you in advance for your help.