86 



Lake Maxinkuckee, Physical and Biological Survey 



Temperatures: The total number of temperature records for 

 April is 362, as follows : 90 for 1900, 1901, 1902 and 1903 each, 

 and 1 each for 1907 and 1909. 



The lowest temperature recorded was 18 on April 10, 1909. 

 The lowest recorded in years of full records was 25 on April 5, 

 1900, and again on April 4, 1903; the highest was 88 on April 

 29, 1900. The extremes were as follows: 



1900, 25 on April 5, and 88 on April 29; range 63. 



1901, 30.1 on April 1, and 85.1 on April 30; range 55. 



1902, 22 on April 8, and 86 on April 21; range 64. 



1903, 25 on April 4, and 75 on April 12; range 50. 



The temperature was at or below freezing as follows: In 

 April, 1900, at 6 a.m. on the 1st, 3d, 4th, 5th and 10th to 14th, 

 inclusive ; at noon on the llth ; and at 6 p. m. on the 3d, llth, and 

 13th. The temperature was freezing at 6 a. m. on 9 days, at noon 

 on one day, and at 6 p. m. on 3 days. 



- In April, 1901, it was at or below freezing at 6 a. m. only on 

 the 1st, and at no time at noon or 6 p. m. 



In April, 1902, it was at or below freezing at 6 a. m. on the 1st, 

 2d, 3d, 4th, 7th and 8th; at noon on the 1st and 7th; and at 6 

 p. m. on the 1st, 7th and 8th. In this month it was down to 

 freezing on 6 days at 6 a. m., on only 2 days at noon, and on 3 

 days at 6 p. m. 



In April, 1903, the temperature was down to 30 at noon and 

 6 p. m. on the 3d; to 25 at 6 a. m., and 32 at noon and 6 p. m. 

 on the 4th, to 28 at 6 a.m. on the 5th, and to 32 at 6 a.m. on 

 the 23d. 



In April, 1909, when only one observation was recorded, it 

 was 18 at 6 a. m. on the 10th. 



The greatest daily range was as follows : 



April 26, 1900, from 46 to 77, or 31. 

 April 30, 1901, from 62.9 to 85.1, or 22.2. 

 April 21, 1902, from 48 to 86, or 38. 

 April 1, 27, and 28, 1903, from 40, 40 and 50, respectively, 

 to 60, 60 and 70, respectively, or 20. 



