easting,northing,name,elevation
50,10,end,0
150,10,after_backreef,0
220,10,20m before flat end,0
1200,10,midway flat,0
2180,10,20m onto flat,0
2212.5,10,qtr_crest(50),0
2225,10,half_crest(50),0
2237.5,10,3qtr_crest(50),0
2262.5,10,qtr_crest(250),0
2325,10,half_crest(250),0
2387.5,10,3qtr_crest(250),0
2312.5,10,qtr_crest(450),0
2425,10,half_crest(450),0
2537.5,10,3qtr_crest(450),0
2362.5,10,qtr_crest(650),0
2525,10,half_crest(650),0
2687.5,10,3qtr_crest(650),0
2320,10,before_crest(50),0
2520,10,before_crest(250),0
2720,10,before_crest(450),0
2920,10,before_crest(650),0
2530,10,start(50),0
2730,10,start(250),0
2930,10,start(450),0
3130,10,start(650),0