Warning: pg_query() [function.pg-query]: Query failed: ERROR: relation "elab_time_spec" does not exist in /usr/home/leslie/img_edx_time_spec.php on line 16

Warning: pg_fetch_array() expects parameter 1 to be resource, boolean given in /usr/home/leslie/img_edx_time_spec.php on line 19

Warning: pg_free_result(): supplied argument is not a valid PostgreSQL result resource in /usr/home/leslie/img_edx_time_spec.php on line 26
JpGraph Error Empty input data array specified for plot. Must have at least one data point.