datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,12 0:30:00,29 ,       0,0.001506,0.000052, 0.00028
sgpcmbeC1.c1,1997,12 1:30:00,30 ,       0,0.003816,0.000127,0.000697
sgpcmbeC1.c1,1997,12 2:30:00,28 ,       0,0.010902,0.000389, 0.00206
sgpcmbeC1.c1,1997,12 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 6:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 7:30:00,29 ,       0,4.473505,1.402895,1.415477
sgpcmbeC1.c1,1997,12 8:30:00,29 ,1.551796,36.95349,17.45666,12.55737
sgpcmbeC1.c1,1997,12 9:30:00,30 ,4.185388,81.62833,38.75468,26.83003
sgpcmbeC1.c1,1997,1210:30:00,30 ,3.051741,94.70593,52.94397,36.90669
sgpcmbeC1.c1,1997,1211:30:00,29 ,3.424964,113.4187,64.41435, 42.5547
sgpcmbeC1.c1,1997,1212:30:00,29 ,6.713559,118.1677,65.33046,45.31348
sgpcmbeC1.c1,1997,1213:30:00,29 , 4.88556,111.2375,60.49788,42.46215
sgpcmbeC1.c1,1997,1214:30:00,29 ,2.759965,93.48241,48.86657,35.96637
sgpcmbeC1.c1,1997,1215:30:00,28 , 3.40417,74.49899,36.56588,25.91611
sgpcmbeC1.c1,1997,1216:30:00,29 ,       0,30.96339,14.35531,11.21954
sgpcmbeC1.c1,1997,1217:30:00,29 ,       0,2.441949, 0.52706,0.664156
sgpcmbeC1.c1,1997,1218:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1219:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1220:30:00,31 ,       0,0.006022,0.000194,0.001082
sgpcmbeC1.c1,1997,1221:30:00,29 ,       0,0.000491,0.000017,0.000091
sgpcmbeC1.c1,1997,1222:30:00,29 ,       0,0.015064,0.000679,0.002896
sgpcmbeC1.c1,1997,1223:30:00,30 ,       0,0.010244,0.000585,0.002171