datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,02 0:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2002,02 1:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2002,02 2:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2002,02 3:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2002,02 4:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2002,02 5:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2002,02 6:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2002,02 7:30:00,2 ,0.000935,0.033236,0.017085, 0.02284
sgpcmbeC1.c1,2002,02 8:30:00,2 ,0.012454,0.736561,0.374507,0.512021
sgpcmbeC1.c1,2002,02 9:30:00,1 ,0.000265,0.000265,0.000265,       .
sgpcmbeC1.c1,2002,0210:30:00,2 ,0.000015,0.273817,0.136916,0.193607
sgpcmbeC1.c1,2002,0211:30:00,2 ,0.000138,0.161504,0.080821,0.114103
sgpcmbeC1.c1,2002,0212:30:00,2 ,0.000507,0.829253, 0.41488,0.586012
sgpcmbeC1.c1,2002,0213:30:00,2 ,0.000404, 0.99996,0.500182,0.706793
sgpcmbeC1.c1,2002,0214:30:00,2 ,0.000084,0.999997, 0.50004,0.707045
sgpcmbeC1.c1,2002,0215:30:00,2 ,0.000029,0.960732,0.480381,0.679319
sgpcmbeC1.c1,2002,0216:30:00,2 ,0.000161,0.557206,0.278684, 0.39389
sgpcmbeC1.c1,2002,0217:30:00,2 ,0.000419,0.033641, 0.01703,0.023491
sgpcmbeC1.c1,2002,0218:30:00,2 ,0.000666,0.041184,0.020925, 0.02865
sgpcmbeC1.c1,2002,0219:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2002,0220:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2002,0221:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2002,0222:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2002,0223:30:00,0 ,       .,       .,       .,       .