sample_id,sample_type,concentration_uM,replicate,absorbance blank_1,blank,0,1,0.010 blank_2,blank,0,2,0.011 std_2_1,standard,2,1,0.171 std_2_2,standard,2,2,0.169 std_2_3,standard,2,3,0.172 std_4_1,standard,4,1,0.329 std_4_2,standard,4,2,0.331 std_4_3,standard,4,3,0.328 std_6_1,standard,6,1,0.489 std_6_2,standard,6,2,0.491 std_6_3,standard,6,3,0.487 std_8_1,standard,8,1,0.648 std_8_2,standard,8,2,0.652 std_8_3,standard,8,3,0.650 std_10_1,standard,10,1,0.807 std_10_2,standard,10,2,0.812 std_10_3,standard,10,3,0.809 unknown_1,unknown,,1,0.603 unknown_2,unknown,,2,0.606 unknown_3,unknown,,3,0.604