"GRDC-Code" "Month" "MinQ" "MaxQ" "MeanQ" 6421500 "01" 74.484001 1114.400024 475.545990 6421500 "02" 75.607002 995.280029 447.156006 6421500 "03" 99.320000 965.320007 364.001007 6421500 "04" 63.766998 661.000000 295.954010 6421500 "05" 27.645000 542.099976 188.130997 6421500 "06" 7.667000 350.730011 125.943001 6421500 "07" 7.226000 656.770020 99.517998 6421500 "08" 1.903000 284.579987 85.127998 6421500 "09" 2.733000 279.470001 86.718002 6421500 "10" 2.742000 494.769989 133.063995 6421500 "11" 21.900000 919.570007 259.377991 6421500 "12" 25.871000 1308.300049 392.507996