Nitrogen dynamics in a highly urbanized coastal area of western Japan: impact of sewage-derived loads

Progress in Earth and Planetary Science

Table 1 Tide and weather conditions and average DTN concentration in the TSE during the field campaigns

Year	Date	Tidal range (m)	Tidal condition	Air temperature (°C)	24 h antecedent rainfall (mm)	Observed lines	Average DTN concentration in TSE (mg L⁻¹)
2014	31 Aug	0.8	Ebb-Rising	27–29	0	SU Line	8
2014	18 Oct	0.6	Rising	15–22	0	KH Line	14
2014	18 Oct	0.6	Rising	15–22	0	SA Line	4^a
2015	7 Feb	1.3	Ebb	5–10	0	KH Line	18
2016	18 Sep	1.4	Ebb	25–28	6.5	KH Line	14^b
2016	18 Sep	1.4	Rising	25–28	6.5	KH Line	14^b