All statistics are based on contigs of size >= 500 bp, unless otherwise noted (e.g., "# contigs (>= 0 bp)" and "Total length (>= 0 bp)" include all contigs).
Suggestion: all assemblies contain continuous fragments of N's of length >= 10 bp. You may consider rerunning QUAST using --scaffolds (-s) option!

Assembly                    20180403_pga  20180421_pga
# contigs (>= 0 bp)         313623        313624      
# contigs (>= 1000 bp)      313623        313624      
# contigs (>= 5000 bp)      49051         49052       
# contigs (>= 10000 bp)     13988         13989       
# contigs (>= 25000 bp)     2001          2002        
# contigs (>= 50000 bp)     224           225         
Total length (>= 0 bp)      2205690888    2205690788  
Total length (>= 1000 bp)   2205690888    2205690788  
Total length (>= 5000 bp)   1635063765    1635063665  
Total length (>= 10000 bp)  1397630776    1397630676  
Total length (>= 25000 bp)  1225799603    1225799503  
Total length (>= 50000 bp)  1166190036    1166189936  
# contigs                   313623        313624      
Largest contig              95480635      95480635    
Total length                2205690888    2205690788  
GC (%)                      33.92         33.92       
N50                         43382739      43382739    
N75                         4746          4746        
L50                         18            18          
L75                         52995         52996       
# N's per 100 kbp           9142.81       9142.81