|0| ± 3 hrs

165

(45.2%)

277

(75.9%)

162

(44.4%)

242

(66.3%)

100

(27.4%)

255

(69.9%)

216

(59.2%)

257

(70.4%)

|6| ± 3 hrs

119

(32.6%)

49

(13.4%)

100

(27.4%)

71

(19.5%)

145

(39.7%)

69

(18.9%)

87

(23.8%)

63

(17.3%)

|12| ± 3 hrs

74

(20.3%)

6

(1.6%)

100

(27.4%)

18

(4.9%)

113

(31.0%)

5

(1.4%)

56

(15.3%)

11

(3.0%)

|18| ± 3 hrs

7

(1.9%)

33

(9.0%)

3

(0.8%)

34

(9.3%)

7

(1.9%)

36

(9.9%)

6

(1.6%)

34

(9.3%)