TABLE 1 Descriptive Statistics,,,,, Port variables,Dalian,Tianjin,Qingdao,Shanghai,Average for other ports Berths (number),5,7,5,19,4 Water depth (meters),14,12,12,13,13 Cranes (number),7,16,10,28,6 Total TEUs handled during the year (millions),0.74,1.3,1.5,4.22,0.64 TEUs per crane,106,81,150,151,107 TEUs per berth,148,186,300,222,160 Ship calls (number),"4,216","2,498","2,549","9,660","2,445" Usage factor,5.61,6.25,8.02,8.35,4.58 Routes (number),133,183,202,624,77 ,,,,, Shipping line variable,Chinese,Non-Chinese,,, Average number of vessels ,128,71.3,,,