y: ms sans serif;">log10 of Argon number-density<br>
            </span><span style="font-family: ms sans serif;">5- </span><span style="font-family: ms sans serif;">log10 of atomic Oxigen number-density<br>
            </span><span style="font-family: ms sans serif;">6- </span><span style="font-family: ms sans serif;">log10 of atomic Hydrogen number-density</span><br>
            </td>
            <td style="text-align: center; background-color: rgb(214, 255, 214);"><img style="width: 30px; height: 30p