# Pastebin 8ggH673r
dense array -> sparse1024
x /tmp/ministat_input_0_nir_analyze_fp_range
+ /tmp/ministat_input_1_nir_analyze_fp_range
    N           Min           Max        Median           Avg        Stddev
x   6       1343564     1351102.4     1344755.3     1345562.2     2811.5841
+   6     1452068.9     1455685.6     1453061.4       1453344     1245.1918
Difference at 95.0% confidence
        107782 +/- 2796.93
        8.01018% +/- 0.221869%
        (Student's t, pooled s = 2174.34)

dense array -> sparse256 (what the MR uses)
x /tmp/ministat_input_0_nir_analyze_fp_range
+ /tmp/ministat_input_1_nir_analyze_fp_range
    N           Min           Max        Median           Avg        Stddev
x   6       1343564     1351102.4     1344755.3     1345562.2     2811.5841
+   6     1496360.7     1503655.7     1496940.1     1498503.2     3008.7416
Difference at 95.0% confidence
        152941 +/- 3745.6
        11.3663% +/- 0.293541%
        (Student's t, pooled s = 2911.83)