// Absorb boolean tests into block
(NZ (Equal         cc) yes no) => (EQ  cc yes no)
(NZ (NotEqual      cc) yes no) => (NE  cc yes no)
(NZ (LessThan      cc) yes no) => (LT  cc yes no)
(NZ (LessThanU     cc) yes no) => (ULT cc yes no)
(NZ (LessEqual     cc) yes no) => (LE  cc yes no)
(NZ (LessEqualU    cc) yes no) => (ULE cc yes no)
(NZ (GreaterThan   cc) yes no) => (GT  cc yes no)
(NZ (GreaterThanU  cc) yes no) => (UGT cc yes no)

		`Israel`,
		`Jamaica`,
		`Japan`,
		`Kwajalein`,
		`Libya`,
		`MET`,
		`Mexico/BajaNorte`,
		`Mexico/BajaSur`,
		`Mexico/General`,
		`MST`,
		`MST7MDT`,
		`Navajo`,
		`NZ`,
		`NZ-CHAT`,
		`Pacific/Apia`,
		`Pacific/Auckland`,
		`Pacific/Bougainville`,
		`Pacific/Chatham`,
		`Pacific/Chuuk`,
		`Pacific/Easter`,
		`Pacific/Efate`,
		`Pacific/Enderbury`,

  # Get current time.
  local current_time
  current_time="$(date --utc '+%s.%N')"
  # ...formatted as UTC RFC 3339.
  local timestamp
  timestamp="$(date --utc --date="@${current_time}" '+%FT%T.%NZ')"

  # Calculate latency.
  local latency='null'
  if [ "${status}" == "${LOG_STATUS_STARTED}" ]; then
    LOG_START_TIMES["${bootstep}"]="${current_time}"
  else