datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,02 0:30:00,15 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,02 1:30:00,15 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,02 2:30:00,15 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,02 3:30:00,15 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,02 4:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,02 5:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,02 6:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,02 7:30:00,28 ,       0,26.17022,9.493748,7.265873
sgpcmbeC1.c1,2001,02 8:30:00,27 ,7.784297,126.1332, 49.9189,29.77886
sgpcmbeC1.c1,2001,02 9:30:00,28 ,29.16879,406.6252,108.1928,80.43341
sgpcmbeC1.c1,2001,0210:30:00,28 ,12.80224,522.2637,155.6311,106.3734
sgpcmbeC1.c1,2001,0211:30:00,28 ,  18.278,571.8813,174.5439,118.5034
sgpcmbeC1.c1,2001,0212:30:00,28 ,38.28661, 580.302,195.1279,138.0392
sgpcmbeC1.c1,2001,0213:30:00,28 ,10.82021,605.2227,184.1139,137.7729
sgpcmbeC1.c1,2001,0214:30:00,28 ,17.11502,582.3647,165.0974,123.8907
sgpcmbeC1.c1,2001,0215:30:00,26 ,18.73506,276.4435,118.1203,68.89985
sgpcmbeC1.c1,2001,0216:30:00,27 ,13.27221,280.3669,80.40842,56.95546
sgpcmbeC1.c1,2001,0217:30:00,28 ,5.093417,118.0486,34.24306,26.16978
sgpcmbeC1.c1,2001,0218:30:00,28 ,       0, 4.58572,1.042547, 1.41871
sgpcmbeC1.c1,2001,0219:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0220:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0221:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0222:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0223:30:00,19 ,       0,       0,       0,       0