Dear Stata Experts, I am a not-Stata-savvy researcher. My simple goal is to produce a time-graph overlaid with two curves, one curve for each day. I have transformed my data to the long format. The entire dataset and the problem can be summarised with this small dataset with just the medians of the population:

Medianvalue Id Time
1.00 1 1000
0.97 1 1002
0.90 1 1004
0.95 1 1006
1.00 1 10000
0.93 1 10001
0.91 1 10002
0.88 1 10004
0.92 1 10006

The 1000-numbers are from one day and the 10000-numbers are from a second day, and each rightmost digit corresponds to same hour of the day. I did something to my patients on the second day (the "10000-day") so that already at 1 and 2 hours (10001; 10002) there was quick decrease in malignant cells (disappearing faster). I would like to produce a simple graph where the 10000 and 1000 are the respective origin at the x axis. Please note that there's an extra measurement day 2 (10001), but I hope that wouldn't be a problem.

I simply don't understand to overlay these two curves in one graph (see attachment)

Thank you in advance

BE Wahlin, MD PhD