easting,northing,name,elevation
50,10,end,0
150,10,after_backreef,0
220,10,20m before flat end,0
450,10,midway flat,0
680,10,20m onto flat,0
712.5,10,qtr_crest(50),0
725,10,half_crest(50),0
737.5,10,3qtr_crest(50),0
762.5,10,qtr_crest(250),0
825,10,half_crest(250),0
887.5,10,3qtr_crest(250),0
812.5,10,qtr_crest(450),0
925,10,half_crest(450),0
1037.5,10,3qtr_crest(450),0
862.5,10,qtr_crest(650),0
1025,10,half_crest(650),0
1187.5,10,3qtr_crest(650),0
820,10,before_crest(50),0
1020,10,before_crest(250),0
1220,10,before_crest(450),0
1420,10,before_crest(650),0
1030,10,start(50),0
1230,10,start(250),0
1430,10,start(450),0
1630,10,start(650),0