19 January 2017 09:13:36 PM PGMB_IO_PRB: C version Test the PGMB_IO library. TEST01: PGMB_EXAMPLE sets up PGMB data. PGMB_WRITE writes a PGMB file. Writing the file "pgmb_io_prb_01.pgm". PGMB_EXAMPLE has set up the data. Gray scale data has maximum value 79 PGMB_WRITE was successful. PGMB_CHECK_DATA: G(0,0) = 60 > 55. PGM_CHECK_DATA reports bad data from the file. PGMB_IO_PRB - Fatal error! TEST01 terminated with an error.