course#,section#,student#,grade
A201,1251,298,3.00
A201,1251,349,4.00
A201,1251,548,2.00
A114,1333,473,2.00
A114,1333,654,4.00
A114,1335,210,3.00
A114,1335,548,
H480,1601,358,4.00
H480,1601,410,2.00
H480,1601,649,4.00
H480,1602,298,3.00
H480,1602,473,0.00
M119,1200,148,3.00
M119,1200,210,1.00
M119,1200,348,2.00
M119,1200,473,3.00
M119,1200,558,3.00
M119,1200,649,4.00