Table 2: Statistics for time needed to fill the dates.

Version Time needed (s)
M(s) SD

Version 1 (separate) 3.68 2.69
Version 2 (drop-down) 6.94 2.88
Version 3 (left) 3.61 2.82
Version 4 (inside, permanent) 4.15 2.49
Version 5 (inside) 3.41 2.32
Version 6 (calendar) 5.03 5.40