Table 1

Time of day versus HALO (based on room lights on at 6 a.m. and room lights off at 6 p.m.)

TimeHALO
9 a.m.3
1 p.m.7
4 p.m.10
7 p.m.13
11 p.m.17
2 a.m.20
5 a.m.23