Humminbird sonar temperature stored in DAT

[CameronBodine]

It appears that Unknown2 in the DAT file does record the temperature (degrees C) at the beginning of the recording. This can be used instead of the user input.

Is the user input needed anymore?

[CameronBodine]

Comparison of four recordings from new xplore:

	Rec01	Rec02	Rec03	Rec04	Comments
SP1	196	196	196	196
water_code	1	1	1	1
SP2	128	128	128	128
unknown_1	1	1	1	1
sonar_name	1046	1046	1046	1046
unknown_2	17	19	19	19	Temperature?
unknown_3	0	0	0	0
unknown_4	0	0	0	0
unix_time	1749909426	1749914263	1749915263	1749917450
utm_e	-10328603	-10340610	-10340536	-10340562
utm_n	5593892	5588479	5588603	5588552
filename	Rec00001.SON	Rec00002.SON	Rec00003.SON	Rec00004.SON
numrecords	2573	13610	23144	22262
recordlens_ms	45110	236495	402145	389388
linesize	5804688	30723776	52252096	50378104	Approx. total size of data in bytes
unknown_5	5	4	3	2	This value also changes…
unknown_6	30	30	30	30
unknown_7	1046	1046	1046	1046
unknown_8	1046	1046	1046	1046
unknown_9	0	0	0	0
unknown_10	0	0	0	0
unknown_11	0	0	0	0
unknown_12	0	0	0	0
unknown_13	-1582119980	-1582119980	-1582119980	-1582119980
unknown_14	-1582119980	-1582119980	-1582119980	-1582119980
unknown_15	-1582119980	-1582119980	-1582119980	-1582119980
water_type	fresh	fresh	fresh	fresh
nchunk	500	500	500	500
pixM	0.018767403	0.018767403	0.018767403	0.018767403
epsg	epsg:32615	epsg:32615	epsg:32615	epsg:32615
wgs	epsg:4326	epsg:4326	epsg:4326	epsg:4326