sta_id  lat_n  lon_n  
12S_A   -12    -140   
12S_B   -12    -140   
5S_A    -5     -140   
5S_B    -5     -140   
2S_A    -2     -140   
2S_B    -2     -140   
EQ_A    0      -140   
EQ_B    0      -140   
2N_A    2      -140   
2N_B    2      -140   
5N_A    5      -140   
5N_B    5      -140   
9N_A    9      -140   
9N_B    9      -140