unique_ID: Unique identifier of a diary entry (derived from TUS 15)
	(serial_pnum_weekday)

weekday: Working day or weekend day (derived from uktus15_dv_time_vars)
	0	Saturday or Sunday
	1	Monday to Friday

dayType: Type of day (KindOfDay in uktus15_dv_time_vars)
	1	A workday
	2	A school or college day
	3	A day off due to the weekend/holiday or work schedule
	4	A sick leave day
	5	A vacation/annual leave day
	6	On leave for other reasons
	7	None of the above
	-9	No answer/refused
	-7	Interview not achieved
	-2	Schedule not applicable

month: Month of the year as a numeric (dmonth in uktus15_dv_time_vars)

# TIME AT HOME:

pworkhome: Proportion of the day spent working at home (derived from dml1_1 in uktus15_dv_time_vars and uktus15_diary_ep_long)

phomeother: Proportion of the day spent doing other activities at home (derived from the sum of dml1_0, dml1_3, dml1_7 and dml1_8 in uktus15_dv_time_vars)


# TIME AWAY FROM HOME:

pwork = Proportion of the day spent working away from home (derived from dml1_1 in uktus15_dv_time_vars and uktus15_diary_ep_long)

pschool: Proportion of the day spent at school (derived from dml2_21 in uktus15_dv_time_vars)

pshop: Proportion of the day spent shopping (derived from dml3_361 in uktus15_dv_time_vars)

pservices: Proportion of the day spent at commercial or personal services (derived from the sum of dml3_362 and dml3_363 in uktus15_dv_time_vars)

pleisure: Proportion of the day spent doing outdoors leisure activities (derived from the sum of dml1_4, dml1_5 and dml1_6 in uktus15_dv_time_vars)

pescort: Proportion of the day spent escorting someone else (derived from dml3_923 in uktus15_dv_time_vars)

ptransport: Proportion of the day spent travelling (derived from dml1_9a in uktus15_dv_time_vars)


# TOTALS:

phomeTOT: Total proportion of the day spent doing activities at home (formula = pworkhome + phomeother)

pnothomeTOT: Total proportion of the day spent oudoors (formula = pwork + pschool + pshop + pservices + pleisure + pescort + ptransport)

punknownTOT: Total reamining proportion of the day spent (formula = 1 - (phomeTOT + pnothomeTOT)); if negative, removed form phomeother


#TRANSPORT:

pmwalk: Proportion of travel done walking (derived from uktus15_diary_ep_long)

pmcycle: Proportion of travel done cycling (derived from uktus15_diary_ep_long)

pmprivate: Proportion of travel through a private mean of transportation (includes walking and cycling) (derived from uktus15_diary_ep_long)

pmpublic: Proportion of travel done through a public mean of transportation (derived from uktus15_diary_ep_long)

pmunknown: Proportion of travel done through an unknown mean - note that pm unknown + pmpublic + pmprivate sum to 1 or 0 if no travel is made (derived from uktus15_diary_ep_long)