datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,02 0:30:00,11 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,02 1:30:00,12 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,02 2:30:00,12 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,02 3:30:00,11 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,02 4:30:00,13 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,02 5:30:00,16 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,02 6:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,02 7:30:00,18 ,7.524588,39.94712,19.96133,7.994158
sgpcmbeC1.c1,2002,02 8:30:00,17 ,43.97499,126.8967,76.59294,27.87311
sgpcmbeC1.c1,2002,02 9:30:00,18 ,53.31752, 223.606,121.2713,59.44498
sgpcmbeC1.c1,2002,0210:30:00,18 ,60.57635,295.8109,148.0808,79.78971
sgpcmbeC1.c1,2002,0211:30:00,18 ,64.76738,378.0896,189.5684,112.1498
sgpcmbeC1.c1,2002,0212:30:00,18 ,67.90996,417.4738,221.7698,140.6219
sgpcmbeC1.c1,2002,0213:30:00,18 ,68.29808,426.7691, 188.927,132.2904
sgpcmbeC1.c1,2002,0214:30:00,18 , 66.5296,394.5235,151.5239,110.1269
sgpcmbeC1.c1,2002,0215:30:00,18 ,59.75564, 289.765,126.2069,67.80499
sgpcmbeC1.c1,2002,0216:30:00,18 , 48.7182,159.7052,84.50124,30.10265
sgpcmbeC1.c1,2002,0217:30:00,19 ,19.79424,89.62492,44.80668,16.15407
sgpcmbeC1.c1,2002,0218:30:00,19 ,       0,6.847435,2.771152,2.041939
sgpcmbeC1.c1,2002,0219:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0220:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0221:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0222:30:00,16 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0223:30:00,16 ,       0,       0,       0,       0