; Location: Lost Johns, Lyle Caverns Choke

*begin lylecaverndig

*export 1 20

*title "Ireby - Main Streamway starting at starting at 59  from a bit before the first crawling section to the bubbles tag"
*date 2010.07.03
*team Instruments Tim Allen 
*team Notes Mick Nunwick 
*Instrument Tim's

; mag decl from http://www.ngdc.noaa.gov/geomagmodels/struts/calcDeclination
; lat/long for that neck of the woods = 54.25 N 2.5 W on 21/6/2010
; surface survey - mag decl for 2010 = 2.98 deg W
; true N to grid N correction = -0.33 
; *calibrate declination 2.65
; On 11/07/10 Tim got a calibration of 332 at Bull Pot Farm (reading should be 328 so correction of +4 since *calibrate takes [reading - calibration])

*calibrate declination 0  ;this is to stop declination being added twice
*calibrate compass +4

;from	to	tape	compass	clino	remarks
*data normal from to tape compass clino ignoreall

1	2	3.82	140	63	;furthest point in choke
2	3	1.13	272	33
3	4	0.8	0	90
3	3a	2.5	310	0
4	5	2.2	120	50
5	6	3.42	313	48
6	7	2.75	105	49
7	8	7.4	71	-17
8	9	3.7	75	-32
9	10	3.25	321	-54
10	11	3.35	79	-54
11	12	2.66	74	-52
12	13	9.73	102	-5
13	14	3.93	60	21
14	15	4.16	78	-7
15	16	6.6	144	-3
16	17	28.95	72	2
17	18	15.75	75	1
18	19	3.43	113	4
19	20	8.92	41	-2	;20 is yellow tag at the junction with SE passage (Box3.072?)

; section below added on 06.09.10 by Becka using email from Tim Allen on 29.08.10
; extra three legs data from Tim Allen with Silva compass and guessimate of length using body where station x1 is station 01 of previous survey
; These legs then superceded by lylecaverndig2 file so commented out by Becka on 26.10.11

; 1	x2    	3.6 	285 	+1
; x2	x3     	3.1 	335 	+2
; x3	x4    	2.7    	280 	-3

*end lylecaverndig