datastream, year, month, tod,n, min, max, mean, std twpcmbeC1.c1,2000,01 0:30:00,31 ,434.9123,456.6138,446.4285,6.113453 twpcmbeC1.c1,2000,01 1:30:00,31 ,432.6965,459.1315,445.5558,6.508107 twpcmbeC1.c1,2000,01 2:30:00,30 ,431.1928,455.8797, 444.045, 6.48648 twpcmbeC1.c1,2000,01 3:30:00,30 ,429.3407, 455.604,443.5424,6.589306 twpcmbeC1.c1,2000,01 4:30:00,30 ,429.5076,455.7959,443.2346,6.768077 twpcmbeC1.c1,2000,01 5:30:00,31 ,432.4169,456.0103,443.0505,6.705358 twpcmbeC1.c1,2000,01 6:30:00,31 ,437.2935,460.0394,447.2519,6.337063 twpcmbeC1.c1,2000,01 7:30:00,31 ,442.0838,490.1007,466.2131,11.56689 twpcmbeC1.c1,2000,01 8:30:00,31 ,443.1712,522.4192,487.5235, 20.1626 twpcmbeC1.c1,2000,01 9:30:00,31 ,445.6927,550.2068,506.2979,30.37074 twpcmbeC1.c1,2000,0110:30:00,31 ,445.9286,578.4528,516.4714,38.22109 twpcmbeC1.c1,2000,0111:30:00,31 ,441.9611,586.5587,519.1085,46.57946 twpcmbeC1.c1,2000,0112:30:00,31 ,442.2358,602.6145,526.8542,50.55831 twpcmbeC1.c1,2000,0113:30:00,31 ,440.4088,607.0356,525.1545,50.38582 twpcmbeC1.c1,2000,0114:30:00,31 ,440.6333,585.8997,514.8169,45.37013 twpcmbeC1.c1,2000,0115:30:00,31 ,439.7619,565.9224,502.5717,37.58104 twpcmbeC1.c1,2000,0116:30:00,31 ,442.1823,531.8383, 489.161,25.69145 twpcmbeC1.c1,2000,0117:30:00,31 ,442.6705,496.6323,471.7672, 14.2528 twpcmbeC1.c1,2000,0118:30:00,31 ,441.6473,467.7389,456.7398,6.465783 twpcmbeC1.c1,2000,0119:30:00,31 ,443.4463,461.2816,452.4566,5.584129 twpcmbeC1.c1,2000,0120:30:00,31 ,441.9672,460.9637,449.7853,5.658476 twpcmbeC1.c1,2000,0121:30:00,31 ,436.7347,459.4561,448.4201,5.989846 twpcmbeC1.c1,2000,0122:30:00,31 ,437.0273,457.7386,447.8665,5.601789 twpcmbeC1.c1,2000,0123:30:00,30 ,437.7266,456.6515,446.5721,5.543674