$ix->write_points(
        data => {
            name    => "test",
            columns => [qw(time forecast)],
            points  => [
                       [1445407200, 17.11 ], 
                       [1445410800, 28.96 ], 
                       [1445414400, 60.55 ], 
                       [1445418000, 114.51 ], 
                       [1445410800, 137.94 ],
                       ],
                       },
    ) or die "write_points: " . $ix->errstr;