QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL Station : Topolobampo Latitude: 25 36.0N Country : Mexico Longitude: 109 02.9W JASL # : 676A Time Meridian: 105W (GMT - 7 hr) GLOSS # : none TOGA #: none NODC #: 72105901 Contributor : Servicio Mareografico Nacional Instituto de Geofisica Universidad Nacional Autonoma de Mexico 04510 Mexico, D. F. MEXICO Originator : same Original Data: analog Instrmnt Type: standard gauge with float and stilling well Digitzd Intvl: hourly to tenths of feet Present Data : Hourly, daily, and monthly values obtained by: Hourly : spot sample on the hour from the analog roll Daily : 119-point convolution filter (Bloomfield, 1976) centered on noon applied to the hourly data with respective periods of the 95, 50, and 5% amplitude points at 124.0, 60.2, and 40.2 hours Monthly: Simple average of all daily values; calculated if 7 or fewer days are missing Span of data : 25 Feb 1956 - 31 Dec 1974 Gaps > 1 mon : 14 Nov 1961 - 08 Jan 1963 Time Refernce: GMT (hours 00-23) Space-filler Flag :-9999 Units : millimeters Missing Data Flag : 9999 Existing : Yes Operational : Yes Sat. Trans. : No Distribution : 1956-1974 Refernce Levl: The data are referred to tide staff zero which is linked to fixed bench marks. Comment : The daily and monthly values do not reveal any obvious reference level shifts. CI MISSING REPLACED GAPS QUESTIONABLE YEAR (%) DATA OR BAD DATA FLUCTUATIONS ---- --- -------------------- --------------- -------------------- 1956 85 none (19)089-(05)090 none (22)185-(06)186 (16)322-(03)323 1957 100 none none none 1958 100 none (17)070-(09)071 65-66 (19)118-(08)119 (20)257-(16)258 (22)345-(11)346 (18)348-(01)349 1959 98 357-365 (00)026-(19)026 164-165 (00)029-(14)029 (13)127-(04)128 (01)213-(17)213 (16)231-(06)232 (17)270-(01)271 1960 98 1-5,110-111 (09)110-(02)111 176-177,259-260 (12)113-(03)114 (17)131-(04)132 (02)263-(09)263 1961 87 318-365 (22)019-(11)020 none (20)034-(05)035 (17)091-(16)092 (23)206-(21)207 (08)289-(19)289 (04)290-(14)290 (17)296-(16)297 (02)242-(17)242 1962 0 1-365 none none 1963 98 1-8 (11)201-(23)201 10-11,209 (17)336-(04)337 1964 100 none (18)094-(02)095 271 (14)187-(23)187 (07)220-(21)220 (05)230-(23)230 (11)239-(23)239 (03)263-(10)263 (07)301-(19)301 1965 100 none (06)132-(22)132 195 (21)205-(08)206 (11)209-(05)210 (05)293-(23)293 1966 100 none (03)165-(17)165 none (02)228-(14)228 (05)263-(19)263 (18)271-(03)272 1967 98 117-123 (20)103-(09)104 none (00)128-(07)128 (23)141-(09)142 (22)189-(13)190 (18)247-(04)248 (00)261-(09)261 1968 100 none (08)163-(21)163 none (07)288-(06)289 (15)293-(04)294 (18)296-(01)297 (16)312-(01)313 1969 100 none (17)029-(02)030 none (09)234-(22)234 (05)243-(23)243 (11)271-(02)272 (07)272-(17)272 (01)308-(13)308 (18)329-(02)330 (20)354-(05)355 1970 100 none (20)006-(03)007 36,46,84,350 (21)007-(05)008 (21)009-(06)010 (08)023-(17)023 (20)040-(05)041 (21)042-(06)043 (19)052-(04)053 (16)063-(05)064 (12)091-(00)092 (07)096-(18)096 (10)111-(18)111 (01)238-(09)238 (06)261-(16)261 (21)266-(07)267 (15)299-(01)300 (15)306-(02)307 (02)336-(21)336 (01)346-(15)346 1971 100 none (01)151-(15)151 259-260 (04)210-(15)210 (04)218-(11)218 (07)224-(14)224 (20)279-(06)280 (06)298-(16)298 (08)299-(19)299 (16)308-(05)309 (14)320-(23)320 (06)351-(17)351 (15)364-(02)365 1972 100 none (14)014-(01)015 97-98,163-165 (17)017-(04)018 (19)029-(03)030 (10)059-(01)060 (06)161-(16)161 (10)164-(19)164 (05)251-(13)251 (19)272-(02)273 (18)356-(05)357 (21)362-(05)363 1973 100 none (18)015-(03)016 187-190,204-205 (17)047-(04)048 (22)050-(08)051 (18)075-(01)076 (07)122-(14)122 (08)123-(16)123 (14)127-(00)128 (07)134-(14)134 (07)151-(23)151 (06)153-(15)153 (06)181-(20)181 (01)244-(14)244 (15)312-(01)313 (18)314-(02)315 (15)341-(03)342 (16)342-(02)343 (15)357-(01)358 (17)359-(01)360 1974 100 none (18)007-(01)008 252 (18)009-(02)010 (18)010-(07)011 (22)019-(07)020 (19)034-(05)035 (18)036-(01)037 (21)037-(05)038 (10)046-(17)046 (19)092-(03)093 (07)096-(18)096 (02)110-(13)110 (10)113-(17)113 (13)121-(22)121 (01)125-(14)125 (00)228-(13)228 (23)306-(08)307 (20)345-(04)346 (18)346-(07)347 (19)360-(05)361 (20)362-(03)363 (22)363-(05)364