geodist lat1 lon1 var1 var2, generate(a1)
geodist lat1 lon1 var3 var4, generate(a2)
geodist lat1 lon1 var5 var6, generate(a3
geodist lat1 lon1 var7 var8, generate(a4)
geodist lat1 lon1 var9 var10, generate(a5)
geodist lat1 lon1 var11 var12, generate(a6)
geodist lat1 lon1 var13 var14, generate(a7)
geodist lat1 lon1 var15 var16, generate(a8)
geodist lat1 lon1 var17 var18, generate(a9)
geodist lat1 lon1 var19 var20, generate(a10)
geodist lat1 lon1 …… …… , ……