The Global OzoneObserving System (GO3OS) consists of more than 140 monitoring stations of total ozone, the largest number of which is being located in the middle Northern latitudes, while the operation of these stations is being conducted using the following instruments:

• Dobson spectrophotometer
• Brewer spectrophotometer
• Filter Ozonometer ( M-83, M -124)

In the following table there are available for each station the results of the comparisons with the GOME GDP4.0 level-2 total ozone data.

	ID	Name	Country	Lat	Lon	Type
	30d	MARCUS-ISLAND	Japan	24.28	153.97	Dobson
	209d	KUNMING	China	25.02	102.68	Dobson
	190d	NAHA	Japan	26.2	127.67	Dobson
	10d	NEW-DELHI	India	28.63	77.22	Dobson
	152d	CAIRO	Egypt	30.08	31.28	Dobson
	11d	QUETTA	Pakistan	30.18	66.95	Dobson
	7d	KAGOSHIMA	Japan	31.63	130.6	Brewer
	287B	FUNCHAL	Portugal	32.65	-17.05	Brewer
	13d	SRINAGAR	India	34.08	74.83	Dobson
	332B	POHANG	Korea, Republic of	36.03	129.38	Brewer
	14d	TATENO	Japan	36.05	140.13	Dobson
	295B	MT.WALIGUAN	China	36.17	100.53	Brewer
	106d	NASHVILLE	United States	36.25	-86.57	Dobson
	341D	HANFORD	United States	36.32	-119.63	Dobson
	213d	EL-ARENOSILLO	Spain	37.1	-6.73	Dobson
	213b	EL-ARENOSILLO	Spain	37.1	-6.73	Brewer
	252d	SEOUL	Korea, Republic of	37.57	126.95	Dobson
	107d	WALLOPS-ISLAND	United States	37.87	-75.52	Dobson
	90m	ASHKHABAD	Turkmenistan	37.97	58.33	M-124
	293D	ATHENS	Greece	38	23.7	Dobson
	346B	MURCIA	Spain	38	-1.17	Brewer
	113m	DUSHANBE	Tajikistan	38.58	68.78	M-124
	82d	LISBON	Portugal	38.77	-9.13	Dobson
	82b	LISBON	Portugal	38.77	-9.13	Brewer
	208d	SHIANGHER	China	39.77	117	Dobson
	67d	BOULDER	United States	40.02	-105.25	Dobson
	308B	MADRID	Spain	40.45	-3.55	Brewer
	261b	THESSALONIKI	Greece	40.52	22.97	Brewer
	305B	ROME	Italy	41.9	12.52	Brewer
	132m	SOFIA	Bulgaria	42.82	23.38	M-124
149 records found! (Records from 31 to 60 - Page 2/5)
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