import csv

def process_csv(input_file, output_file):
    n = -2
    with open(input_file, mode='r', newline='') as infile:
        reader = csv.reader(infile)
        with open(output_file, mode='w', newline='') as outfile:
            writer = csv.writer(outfile)
            for row in reader:
                n = n + 1
                if n==4:
                    writer.writerow(row)
                    n = 0

# Beispielhafte Verwendung
input_file = 'Lastprofil_SWBT.csv'
output_file = 'Lastprofil_final_H0.csv'
process_csv(input_file, output_file)