year   month  collection_type  station  lat        lon        
2014   7      Multiple_core    1        78.942     125.243    
2014   7      Multiple_core    4        77.855     126.664    
2014   7      Multiple_core    6        77.142     127.378    
2014   7      Multiple_core    13       76.778     125.83     
2014   7      Multiple_core    14       76.894     127.799    
2014   7      Multiple_core    23       76.171     129.333    
2014   7      Multiple_core    50       75.764     158.529    
2014   7      Multiple_core    53       74.957     161.09     
2014   7      Multiple_core    58       74.44      166.05     
2014   7      Multiple_core    63       74.685     172.361