

Wes'ern side of Atlantic Ocean 



Western side of Indian Ocean 



Eastern, side of Indian Ocean 



20°| 10° O" 10* 20° 30°| 10°S||n 20° 10° 0° 110°' 20 



Chart III. Average range at springtide of semi-diurnal tides 2(M 2 + S 2 ) in centimetres. 



The character of tide F — - 1 \ — — --- is designated by : < F < 0-25 semi- 



(M 2 + S 2 ) 



diurnal tides; : 0-25 < F < 1-5 mixed, mainly semi-diurnal tides; : 



1-5 < F < 30 mixed, mainly diurnal tides; : 30 < F<x> diurnal tides. 



{See : Vol. II, Pt. II, p. 480.) 



I 



