iozone test complete.
Excel output is below:

"Writer report"
        "4"  "512"  "16384"
"716800"   3947  3617  3543

"Re-writer report"
        "4"  "512"  "16384"
"716800"   4023  3914  3923

"Reader report"
        "4"  "512"  "16384"
"716800"   20256  20288  20692

"Re-Reader report"
        "4"  "512"  "16384"
"716800"   20274  20307  20716

"Random read report"
        "4"  "512"  "16384"
"716800"   2761  19428  20653

"Random write report"
        "4"  "512"  "16384"
"716800"   254  641  3759
parker@raspbian:~$