CREATE TABLE table_204_217 (id DECIMAL, "camp" TEXT, "div sec\ division" TEXT, "admin\ district" TEXT, "9 feb" DECIMAL, "11 feb" DECIMAL, "16 feb" DECIMAL, "25 feb" DECIMAL, "27 feb" DECIMAL, "2 mar" DECIMAL, "4 mar" DECIMAL, "6 mar" DECIMAL, "11 mar" DECIMAL, "13 mar" DECIMAL, "24 mar" DECIMAL, "30 mar" DECIMAL, "31 mar" DECIMAL)

which camp is the least amount on mar. 30
SELECT "camp" FROM table_204_217 ORDER BY "30 mar" LIMIT 1
SELECT "camp" FROM "table_204_217" ORDER BY "30 mar" NULLS FIRST LIMIT 1