diff --git a/data/2024-08-27.csv b/data/2024-08-27.csv
new file mode 100644
index 000000000..457a87b61
--- /dev/null
+++ b/data/2024-08-27.csv
@@ -0,0 +1,106 @@
+日時,河川水位,id
+2024-08-27T00:20,1.31,1
+2024-08-27T00:20,1.42,2
+2024-08-27T00:20,0.62,3
+2024-08-27T00:20,0.69,4
+2024-08-27T00:20,0.60,5
+2024-08-27T00:20,0.57,6
+2024-08-27T00:20,4.08,7
+2024-08-27T00:20,2.05,8
+2024-08-27T00:20,0.26,9
+2024-08-27T00:20,0.09,10
+2024-08-27T00:20,0.04,12
+2024-08-27T00:20,0.47,13
+2024-08-27T00:20,1.94,14
+2024-08-27T00:20,2.65,15
+2024-08-27T00:20,6.00,16
+2024-08-27T00:20,6.46,17
+2024-08-27T00:20,0.99,22
+2024-08-27T00:20,0.32,23
+2024-08-27T00:20,1.01,24
+2024-08-27T00:20,0.37,25
+2024-08-27T00:20,0.73,26
+2024-08-27T00:20,0.59,27
+2024-08-27T00:20,0.76,28
+2024-08-26T24:00,0.42,29
+2024-08-26T24:00,0.67,30
+2024-08-26T24:00,0.72,31
+2024-08-26T24:00,0.76,32
+2024-08-27T00:20,0.00,43
+2024-08-27T00:20,1.04,45
+2024-08-27T00:20,0.42,46
+2024-08-27T00:20,1.08,47
+2024-08-27T00:20,0.59,48
+2024-08-26T24:00,4.60,49
+2024-08-26T24:00,0.94,51
+2024-08-27T00:20,0.94,62
+2024-08-27T00:20,0.37,63
+2024-08-27T00:20,0.27,64
+2024-08-27T00:20,0.13,65
+2024-08-27T00:20,0.10,66
+2024-08-27T00:20,6.47,74
+2024-08-27T00:20,0.37,75
+2024-08-27T00:20,0.61,76
+2024-08-27T00:20,0.20,77
+2024-08-27T00:20,6.48,78
+2024-08-27T00:20,0.24,79
+2024-08-27T00:20,0.70,80
+2024-08-27T00:20,6.96,81
+2024-08-27T00:20,6.69,82
+2024-08-27T00:20,6.76,83
+2024-08-27T00:20,0.54,88
+2024-08-27T00:20,0.21,89
+2024-08-27T00:20,0.41,90
+2024-08-27T00:20,0.19,91
+2024-08-27T00:20,0.18,92
+2024-08-27T00:20,0.46,93
+2024-08-27T00:20,349.75,95
+2024-08-27T00:20,0.12,96
+2024-08-27T00:20,0.42,97
+2024-08-27T00:20,1.28,107
+2024-08-27T00:20,0.20,108
+2024-08-27T00:20,0.68,109
+2024-08-27T00:20,1.16,110
+2024-08-27T00:20,0.42,111
+2024-08-27T00:20,0.41,121
+2024-08-27T00:20,0.36,122
+2024-08-27T00:20,0.62,124
+2024-08-27T00:20,0.62,134
+2024-08-27T00:20,0.14,135
+2024-08-27T00:20,0.25,136
+2024-08-27T00:20,0.89,137
+2024-08-27T00:20,0.60,138
+2024-08-27T00:20,0.05,139
+2024-08-27T00:20,0.57,140
+2024-08-27T00:20,0.50,141
+2024-08-27T00:20,0.97,150
+2024-08-27T00:20,0.16,151
+2024-08-27T00:20,0.90,152
+2024-08-27T00:10,1.04,153
+2024-08-27T00:20,1.84,154
+2024-08-27T00:20,0.19,155
+2024-08-27T00:20,0.82,156
+2024-08-27T00:20,0.32,157
+2024-08-27T00:20,0.05,158
+2024-08-26T24:00,,170
+2024-08-27T00:20,458.00,171
+2024-08-27T00:20,0.01,172
+2024-08-27T00:20,1.11,174
+2024-08-27T00:20,569.03,176
+2024-08-27T00:20,0.93,179
+2024-08-27T00:20,1.01,180
+2024-08-27T00:20,2.39,205
+2024-08-27T00:20,0.58,206
+2024-08-27T00:20,1.38,207
+2024-08-27T00:20,1.36,208
+2024-08-27T00:20,0.54,209
+2024-08-26T24:00,,210
+2024-08-27T00:20,0.55,211
+2024-08-27T00:20,0.81,212
+2024-08-27T00:20,0.65,213
+2024-08-27T00:20,0.12,215
+2024-08-27T00:20,1.20,216
+2024-08-27T00:20,3.29,217
+2024-08-27T00:20,0.53,221
+2024-08-26T24:00,0.17,251
+2024-08-26T24:00,0.49,252