Each record gives an epicentral estimate.  Most fields in the record are optional - spaces in the
field indicate that no value has been given.




Byte 1. (*) or ( ) - record type indicator - format=Al
		1. (*) indicates the primary estimate of an event
		2. ( ) indicates an alternative or secondary estimate of an event




Bytes 2-7.  Agency code - format=A6 - left justified

		Further details of the agency codes used in this catalogue may be found in this place




Byte 8. Data source - data taken from the publication indicated.
		1. (B) - BCIS
		2. (I) - ISS/ISC
		3. (N) - NEIS
		4. (T) - Telex
		5. ( ) - Direct




Byte 9. UTC date - optional - Format Al
		(-) implies B.C. date
		() implies A.D. date




Bytes 10. Time of origin - the MANAGE programme reads this as Al 5 and then divides.
		1. Bytes 10-13 - Year - format=I4
		2. Bytes 14-15 - Month - format=I2
		3. Bytes 16-17 - Day - format=I2
		4. Bytes 18-19 - Hours - format=12
		5. Bytes 20-21 - Minutes - format=I2
		6. Bytes 22-24 - Seconds - format=F3.1




Bytes 25-30 - optional - format=F5.3, Al - latitude in degrees - this field is terminated with
		a N or S.




Bytes 31-37 - optional - format F6.3, Al - longitude in degrees - this field is terminated
		with a W or E.




Bytes 38-40 - optional - format=I3 or (***) - depth in kilometers - (***)= depth out of
		range.




Bytes 41-50 - optional - first magnitude
		1. Bytes 41-43 - magnitude value - format=F3.2.
		2. Byte 44 - magnitude scale - format=Al
			1. ( ) - unspecified
			2. (B or b) - body wave magnitude
			3. (C) - coda length magnitude
			4. (D) - duration magnitude
			5. (L) - local (Richter) magnitude
			6. (N) - magnitude from Lg phases (Nuttli)
			7. (S or s) - magnitude from surface waves
			8. (W or w) - moment magnitude
		3. Bytes 45-50 - agency code for magnitude - left justified - format=A6.




Bytes 51-60 - optional - second magnitude - sub fields as for first magnitude.




Bytes 61-62 - optional - maximum intensity from 0 and 12 inclusive - format I2.




Bytes 63-64 - optional - intensity scale - format=A2

		1. ( ) - unspecified
		2. (CS) - Mercalli, Cancani and Seberg
		3. (J) - Japanese Meteorology Agency
		4. (M) - Mercalli
		5. (MM) - Modified Mercalli
		6. (RF) - Rossi & Ferel
		7. (SK) - Medvedev, Sponheur & Karnik




Bytes 65-67 - given when latitude and longitude present - Flinn-Engdahl geographic region
		number - format=I3.
		Flinn, E.A. E.R. Engdahl, 1965.  A proposed basis for geographic and seismic
		regionalization.  Rev.  Geophysics, 3, 123.




Bytes 68-70 - optional - number of stations associated with determination - format=I3.

Byte 71 - type of event - format=Al
		1. ( ) - earthquake
			2. (C) - coal bump
			3. (E) - non-nuclear explosion
			4. (I) - implosion - collapse
			5. (M) - meteoric source
			6. (N) - nuclear explosion
			7. (R) - rockburst
			8. (X) - explosion of unspecified source




Bytes 72-74 - optional - used in place of 68-70 when it is not clear whether the number
		refers to number of stations reporting or number of stations used in solution format=I3.




Byte 75 - optional - cultural factor - format=Al
		1.	(F) - felt earthquake
		2.	(C) - deaths
		3.	(X) - damage