#
# These data are freely available for use in education and research.  If the data are used for scientific publication and/or presentation, it is necessary to get approval of the data provider in advance.  Judging from the nature of the data usage, the data provider may require fair acknowledgement including co-authorship to the data user.
# For technical reasons, the data may be revised without any notice.  This data file must be obtained from the original data site and not be re-distributed.  For more information, please contact with the data provider.
#
# CATEGORY: Atmospheric CO measurement
# STATION NAME : Syowa Station, Antarctica
# LOCATION: 69.00 S, 39.58 E
# CONTRIBUTOR: National Institute of Polar Research and Tohoku University
# CONTACT PERSON: Daisuke Goto (goto.daisuke@nipr.ac.jp)
# PARAMETER: CO
# COVERING PERIOD: 2019-01-16 2020-01-12
# DATA FREQUENCY: daily average
# MEASUREMENT UNIT: ppb
# MEASUREMENT METHOD: Off-Axis Integrated Cavity Output Spectroscopy (Los Gatos Researc, model N2O/CO-23r)
# SAMPLING TYPE: continuous
# MEASUREMENT SCALE: Tohoku University scale 2010
# REMARKS: date are shown in local time (UTC+3)
# VERSION: 20210318

# year	month	day	daily_mean(ppb) standard_deviation(ppb)	data_number
2019	01 	16 	42.00	0.22	17
2019	01 	17 	42.72	0.31	19
2019	01 	18 	42.78	0.72	14
2019	01 	19 	40.67	0.45	24
2019	01 	20 	40.91	1.05	24
2019	01 	21 	41.03	0.43	23
2019	01 	22 	40.39	0.14	9
2019	01 	25 	41.53	1.12	22
2019	01 	26 	39.87	0.23	24
2019	01 	27 	41.72	0.64	24
2019	01 	28 	42.63	0.21	24
2019	01 	29 	43.30	0.50	24
2019	01 	30 	42.52	0.30	22
2019	01 	31 	41.08	0.46	22
2019	02 	01 	40.17	0.25	24
2019	02 	02 	40.26	0.39	19
2019	02 	03 	39.78	0.16	22
2019	02 	04 	39.75	0.17	24
2019	02 	05 	39.55	0.17	20
2019	02 	06 	39.30	0.18	19
2019	02 	07 	39.35	0.15	24
2019	02 	08 	40.71	0.60	24
2019	02 	09 	41.65	0.22	24
2019	02 	10 	42.83	0.64	24
2019	02 	11 	41.07	0.26	24
2019	02 	12 	40.54	0.20	24
2019	02 	13 	40.28	0.20	24
2019	02 	14 	40.88	0.18	24
2019	02 	15 	41.35	0.40	17
2019	02 	16 	42.29	0.35	24
2019	02 	17 	43.13	0.42	24
2019	02 	18 	43.12	0.53	23
2019	02 	19 	44.65	0.93	24
2019	02 	20 	45.10	0.80	24
2019	02 	21 	44.49	0.18	22
2019	02 	22 	43.63	0.42	24
2019	02 	23 	43.43	0.38	24
2019	02 	24 	44.63	0.27	23
2019	02 	25 	44.97	0.35	24
2019	02 	26 	43.57	0.32	22
2019	02 	27 	43.73	0.23	24
2019	02 	28 	43.55	0.29	24
2019	03 	01 	43.25	0.14	24
2019	03 	02 	43.26	0.11	23
2019	03 	03 	43.22	0.19	24
2019	03 	04 	43.55	0.16	23
2019	03 	05 	43.99	0.12	24
2019	03 	06 	44.07	0.14	24
2019	03 	07 	44.07	0.12	24
2019	03 	08 	43.88	0.15	24
2019	03 	09 	43.98	0.14	20
2019	03 	10 	44.06	0.09	24
2019	03 	11 	44.28	0.12	21
2019	03 	12 	44.31	0.20	22
2019	03 	13 	44.10	0.16	24
2019	03 	14 	43.95	0.17	19
2019	03 	15 	43.90	0.12	24
2019	03 	16 	44.07	0.21	17
2019	03 	17 	44.12	0.14	23
2019	03 	18 	44.11	0.16	24
2019	03 	19 	44.13	0.18	19
2019	03 	20 	44.43	0.10	24
2019	03 	21 	44.65	0.13	24
2019	03 	22 	44.40	0.14	24
2019	03 	23 	44.73	0.13	24
2019	03 	24 	44.61	0.13	24
2019	03 	25 	44.72	0.12	24
2019	03 	26 	44.62	0.15	24
2019	03 	27 	44.51	0.10	24
2019	03 	28 	44.90	0.21	24
2019	03 	29 	44.99	0.23	24
2019	03 	30 	44.74	0.11	24
2019	03 	31 	44.88	0.19	24
2019	04 	01 	44.89	0.12	20
2019	04 	02 	45.15	0.26	23
2019	04 	03 	45.80	0.23	24
2019	04 	04 	45.61	0.20	24
2019	04 	05 	45.79	0.26	24
2019	04 	06 	46.20	0.17	24
2019	04 	07 	45.87	0.18	22
2019	04 	08 	45.87	0.16	19
2019	04 	09 	46.00	0.14	24
2019	04 	10 	46.43	0.12	24
2019	04 	11 	46.41	0.19	24
2019	04 	12 	46.25	0.20	24
2019	04 	13 	46.52	0.23	24
2019	04 	14 	46.28	0.20	22
2019	04 	15 	46.30	0.15	24
2019	04 	16 	46.30	0.16	24
2019	04 	17 	46.40	0.15	24
2019	04 	18 	46.56	0.20	16
2019	04 	19 	46.56	0.17	22
2019	04 	20 	46.81	0.37	24
2019	04 	21 	47.32	0.15	24
2019	04 	22 	47.23	0.24	24
2019	04 	23 	47.24	0.17	24
2019	04 	24 	47.26	0.13	24
2019	04 	25 	47.50	0.14	23
2019	04 	26 	47.49	0.12	24
2019	04 	27 	47.61	0.19	24
2019	04 	28 	47.57	0.28	24
2019	04 	29 	47.64	0.15	24
2019	04 	30 	47.84	0.21	24
2019	05 	01 	48.00	0.23	20
2019	05 	02 	48.08	0.18	23
2019	05 	03 	48.08	0.16	23
2019	05 	04 	48.17	0.20	23
2019	05 	05 	48.30	0.16	24
2019	05 	06 	48.51	0.21	24
2019	05 	07 	48.42	0.17	24
2019	05 	08 	48.46	0.18	24
2019	05 	09 	48.39	0.17	24
2019	05 	10 	48.84	0.17	24
2019	05 	11 	48.82	0.16	24
2019	05 	12 	48.84	0.20	24
2019	05 	13 	49.31	0.23	24
2019	05 	14 	49.11	0.21	24
2019	05 	15 	49.47	0.16	24
2019	05 	16 	49.57	0.18	24
2019	05 	17 	49.66	0.15	24
2019	05 	18 	49.84	0.16	23
2019	05 	19 	49.87	0.15	22
2019	05 	20 	49.84	0.17	23
2019	05 	21 	50.02	0.23	24
2019	05 	22 	50.39	0.24	24
2019	05 	23 	50.38	0.14	24
2019	05 	24 	50.43	0.15	24
2019	05 	25 	50.52	0.18	21
2019	05 	26 	50.83	0.26	17
2019	05 	27 	50.84	0.20	23
2019	06 	04 	52.43	0.29	10
2019	06 	05 	52.02	0.26	24
2019	06 	06 	52.01	0.30	24
2019	06 	07 	52.64	0.40	24
2019	06 	08 	53.00	0.33	24
2019	06 	09 	52.68	0.34	21
2019	06 	10 	52.80	0.32	24
2019	06 	11 	52.82	0.21	24
2019	06 	12 	53.08	0.29	24
2019	06 	13 	53.12	0.25	24
2019	06 	14 	52.94	0.23	23
2019	06 	15 	53.42	0.00	1
2019	06 	16 	53.64	0.40	18
2019	06 	17 	53.72	0.22	21
2019	06 	18 	53.58	0.24	24
2019	06 	19 	53.82	0.29	24
2019	06 	20 	55.08	0.39	24
2019	06 	21 	54.85	0.21	24
2019	06 	22 	54.71	0.38	24
2019	06 	23 	54.52	0.27	24
2019	06 	24 	54.96	0.12	24
2019	06 	25 	55.05	0.14	24
2019	06 	26 	55.17	0.18	24
2019	06 	27 	55.62	0.21	24
2019	06 	28 	55.81	0.16	24
2019	06 	29 	55.94	0.12	21
2019	06 	30 	56.31	0.46	19
2019	07 	01 	56.11	0.55	23
2019	07 	02 	55.99	0.19	22
2019	07 	03 	56.21	0.37	24
2019	07 	04 	56.24	0.20	20
2019	07 	05 	56.29	0.11	24
2019	07 	06 	56.41	0.23	23
2019	07 	07 	56.49	0.09	24
2019	07 	08 	56.56	0.28	22
2019	07 	14 	57.36	0.37	11
2019	07 	15 	58.06	0.34	22
2019	07 	16 	58.34	0.30	24
2019	07 	17 	57.80	0.14	22
2019	07 	18 	58.29	0.39	21
2019	07 	19 	59.01	0.21	23
2019	07 	20 	58.76	0.24	24
2019	07 	21 	58.08	0.28	7
2019	07 	22 	58.46	0.23	7
2019	07 	23 	58.97	0.18	24
2019	07 	24 	59.15	0.16	24
2019	07 	25 	59.05	0.09	24
2019	07 	26 	59.11	0.16	24
2019	07 	27 	59.33	0.21	24
2019	07 	28 	59.58	0.12	24
2019	07 	29 	59.61	0.15	21
2019	07 	30 	59.67	0.16	24
2019	07 	31 	59.53	0.07	24
2019	08 	01 	59.63	0.14	24
2019	08 	02 	59.74	0.10	24
2019	08 	03 	60.07	0.25	23
2019	08 	04 	60.36	0.13	22
2019	08 	05 	60.28	0.31	7
2019	08 	07 	60.79	0.33	14
2019	08 	08 	60.80	0.09	22
2019	08 	09 	60.44	0.11	22
2019	08 	10 	60.44	0.10	23
2019	08 	11 	60.68	0.11	23
2019	08 	12 	60.72	0.18	15
2019	08 	13 	60.48	0.31	23
2019	08 	14 	60.28	0.10	24
2019	08 	15 	60.34	0.21	24
2019	08 	16 	61.18	0.15	24
2019	08 	17 	61.57	0.17	24
2019	08 	18 	61.93	0.14	23
2019	08 	19 	62.04	0.16	24
2019	08 	20 	62.08	0.15	23
2019	08 	21 	62.52	0.21	24
2019	08 	22 	62.67	0.10	23
2019	08 	23 	62.74	0.12	22
2019	08 	24 	62.78	0.25	23
2019	08 	25 	63.16	0.30	24
2019	08 	26 	63.18	0.29	24
2019	08 	27 	63.26	0.23	23
2019	08 	28 	63.30	0.12	23
2019	08 	29 	62.96	0.18	21
2019	08 	30 	62.96	0.09	23
2019	08 	31 	62.93	0.14	24
2019	09 	01 	63.11	0.07	24
2019	09 	02 	63.45	0.18	22
2019	09 	03 	63.68	0.07	24
2019	09 	04 	64.13	0.37	24
2019	09 	05 	64.12	0.10	22
2019	09 	06 	63.94	0.23	20
2019	09 	07 	63.91	0.10	23
2019	09 	08 	63.70	0.08	24
2019	09 	09 	63.63	0.06	19
2019	09 	10 	63.71	0.19	20
2019	09 	11 	63.56	0.07	24
2019	09 	12 	63.44	0.06	23
2019	09 	13 	63.76	0.13	24
2019	09 	14 	64.33	0.26	24
2019	09 	15 	64.29	0.39	13
2019	09 	16 	63.95	0.15	22
2019	09 	17 	63.88	0.06	24
2019	09 	18 	63.93	0.12	24
2019	09 	19 	64.21	0.21	15
2019	09 	20 	64.13	0.28	22
2019	09 	21 	63.75	0.30	19
2019	09 	24 	63.71	0.09	15
2019	09 	25 	63.72	0.13	23
2019	09 	26 	63.59	0.08	24
2019	09 	27 	63.47	0.07	24
2019	09 	28 	63.35	0.10	24
2019	09 	29 	63.45	0.14	24
2019	09 	30 	63.24	0.15	24
2019	10 	01 	63.23	0.09	23
2019	10 	02 	63.07	0.16	24
2019	10 	03 	63.89	0.43	23
2019	10 	04 	64.24	0.20	22
2019	10 	05 	64.67	0.27	24
2019	10 	06 	64.13	0.16	24
2019	10 	07 	64.43	0.16	20
2019	10 	08 	64.60	0.14	24
2019	10 	09 	65.76	0.53	24
2019	10 	10 	64.53	0.40	24
2019	10 	11 	64.31	0.17	24
2019	10 	12 	63.89	0.31	20
2019	10 	13 	63.22	0.12	24
2019	10 	14 	62.49	0.27	24
2019	10 	15 	63.49	0.40	24
2019	10 	16 	63.69	0.15	24
2019	10 	17 	63.78	0.14	23
2019	10 	18 	64.33	0.48	21
2019	10 	19 	64.87	0.61	23
2019	10 	20 	65.08	1.23	23
2019	10 	21 	65.18	0.68	22
2019	10 	22 	64.97	0.49	20
2019	10 	23 	64.39	0.32	23
2019	10 	24 	63.81	0.41	24
2019	10 	25 	63.15	0.28	24
2019	10 	26 	63.04	0.37	24
2019	10 	27 	62.90	0.15	24
2019	10 	28 	63.18	0.19	22
2019	10 	29 	63.23	0.19	24
2019	10 	30 	63.57	0.31	22
2019	10 	31 	62.87	0.75	24
2019	11 	01 	63.09	0.62	22
2019	11 	02 	63.62	0.35	24
2019	11 	03 	63.42	0.34	21
2019	11 	04 	62.92	0.24	23
2019	11 	05 	62.38	0.16	24
2019	11 	06 	61.92	0.32	24
2019	11 	07 	61.44	0.21	24
2019	11 	08 	60.95	0.30	22
2019	11 	09 	60.66	0.22	18
2019	11 	10 	60.31	0.38	24
2019	11 	11 	60.25	0.16	24
2019	11 	12 	60.07	0.21	23
2019	11 	13 	59.63	0.50	16
2019	11 	14 	59.41	0.32	23
2019	11 	15 	58.92	0.22	20
2019	11 	16 	59.42	0.15	24
2019	11 	17 	59.13	0.35	24
2019	11 	18 	58.57	0.35	21
2019	11 	19 	58.06	0.28	24
2019	11 	20 	57.50	0.29	24
2019	11 	21 	57.16	0.27	23
2019	11 	22 	56.80	0.43	24
2019	11 	23 	56.84	0.30	24
2019	11 	24 	56.93	0.31	24
2019	11 	25 	55.95	0.27	22
2019	11 	26 	55.92	0.40	22
2019	11 	27 	56.21	0.44	22
2019	11 	28 	55.72	0.36	21
2019	11 	29 	55.06	0.36	21
2019	11 	30 	54.29	0.28	20
2019	12 	01 	53.74	0.63	12
2019	12 	02 	54.59	0.16	9
2019	12 	03 	54.65	0.35	21
2019	12 	04 	53.13	0.60	24
2019	12 	05 	52.99	0.56	24
2019	12 	06 	53.06	0.58	24
2019	12 	07 	54.25	0.37	24
2019	12 	08 	52.72	0.85	23
2019	12 	09 	51.03	0.41	24
2019	12 	10 	51.13	0.53	21
2019	12 	11 	50.76	0.42	24
2019	12 	12 	49.81	0.22	24
2019	12 	13 	50.00	0.23	22
2019	12 	14 	50.67	0.22	24
2019	12 	15 	50.04	0.30	24
2019	12 	16 	49.97	0.37	23
2019	12 	17 	49.47	0.55	24
2019	12 	18 	49.18	0.48	22
2019	12 	19 	47.69	0.63	24
2019	12 	20 	47.70	0.94	23
2019	12 	21 	49.87	0.22	24
2019	12 	22 	50.12	0.28	24
2019	12 	23 	49.70	0.82	24
2019	12 	24 	48.96	0.48	20
2019	12 	25 	48.46	0.25	24
2019	12 	26 	47.81	0.39	24
2019	12 	27 	47.06	0.44	21
2019	12 	28 	48.97	1.95	24
2019	12 	29 	51.13	0.54	24
2019	12 	30 	49.55	0.82	24
2019	12 	31 	50.16	0.66	24
2020	01 	01 	50.48	0.20	21
2020	01 	02 	52.03	1.01	18
2020	01 	03 	50.42	1.88	23
2020	01 	04 	47.94	0.71	24
2020	01 	05 	46.61	0.58	24
2020	01 	06 	47.74	0.42	23
2020	01 	07 	48.46	0.46	23
2020	01 	08 	46.71	0.60	23
2020	01 	09 	48.19	0.44	22
2020	01 	10 	48.60	0.25	24
2020	01 	11 	48.75	1.37	21