diff --git a/pydse/data/international-airline-passengers.csv b/pydse/data/international-airline-passengers.csv
index c8dd829..472a918 100644
--- a/pydse/data/international-airline-passengers.csv
+++ b/pydse/data/international-airline-passengers.csv
@@ -1,145 +1,145 @@
-"Month";"Passengers"
-"1949-01";112
-"1949-02";118
-"1949-03";132
-"1949-04";129
-"1949-05";121
-"1949-06";135
-"1949-07";148
-"1949-08";148
-"1949-09";136
-"1949-10";119
-"1949-11";104
-"1949-12";118
-"1950-01";115
-"1950-02";126
-"1950-03";141
-"1950-04";135
-"1950-05";125
-"1950-06";149
-"1950-07";170
-"1950-08";170
-"1950-09";158
-"1950-10";133
-"1950-11";114
-"1950-12";140
-"1951-01";145
-"1951-02";150
-"1951-03";178
-"1951-04";163
-"1951-05";172
-"1951-06";178
-"1951-07";199
-"1951-08";199
-"1951-09";184
-"1951-10";162
-"1951-11";146
-"1951-12";166
-"1952-01";171
-"1952-02";180
-"1952-03";193
-"1952-04";181
-"1952-05";183
-"1952-06";218
-"1952-07";230
-"1952-08";242
-"1952-09";209
-"1952-10";191
-"1952-11";172
-"1952-12";194
-"1953-01";196
-"1953-02";196
-"1953-03";236
-"1953-04";235
-"1953-05";229
-"1953-06";243
-"1953-07";264
-"1953-08";272
-"1953-09";237
-"1953-10";211
-"1953-11";180
-"1953-12";201
-"1954-01";204
-"1954-02";188
-"1954-03";235
-"1954-04";227
-"1954-05";234
-"1954-06";264
-"1954-07";302
-"1954-08";293
-"1954-09";259
-"1954-10";229
-"1954-11";203
-"1954-12";229
-"1955-01";242
-"1955-02";233
-"1955-03";267
-"1955-04";269
-"1955-05";270
-"1955-06";315
-"1955-07";364
-"1955-08";347
-"1955-09";312
-"1955-10";274
-"1955-11";237
-"1955-12";278
-"1956-01";284
-"1956-02";277
-"1956-03";317
-"1956-04";313
-"1956-05";318
-"1956-06";374
-"1956-07";413
-"1956-08";405
-"1956-09";355
-"1956-10";306
-"1956-11";271
-"1956-12";306
-"1957-01";315
-"1957-02";301
-"1957-03";356
-"1957-04";348
-"1957-05";355
-"1957-06";422
-"1957-07";465
-"1957-08";467
-"1957-09";404
-"1957-10";347
-"1957-11";305
-"1957-12";336
-"1958-01";340
-"1958-02";318
-"1958-03";362
-"1958-04";348
-"1958-05";363
-"1958-06";435
-"1958-07";491
-"1958-08";505
-"1958-09";404
-"1958-10";359
-"1958-11";310
-"1958-12";337
-"1959-01";360
-"1959-02";342
-"1959-03";406
-"1959-04";396
-"1959-05";420
-"1959-06";472
-"1959-07";548
-"1959-08";559
-"1959-09";463
-"1959-10";407
-"1959-11";362
-"1959-12";405
-"1960-01";417
-"1960-02";391
-"1960-03";419
-"1960-04";461
-"1960-05";472
-"1960-06";535
-"1960-07";622
-"1960-08";606
-"1960-09";508
-"1960-10";461
-"1960-11";390
-"1960-12";432
+"Month","Passengers"
+"1949-01",112
+"1949-02",118
+"1949-03",132
+"1949-04",129
+"1949-05",121
+"1949-06",135
+"1949-07",148
+"1949-08",148
+"1949-09",136
+"1949-10",119
+"1949-11",104
+"1949-12",118
+"1950-01",115
+"1950-02",126
+"1950-03",141
+"1950-04",135
+"1950-05",125
+"1950-06",149
+"1950-07",170
+"1950-08",170
+"1950-09",158
+"1950-10",133
+"1950-11",114
+"1950-12",140
+"1951-01",145
+"1951-02",150
+"1951-03",178
+"1951-04",163
+"1951-05",172
+"1951-06",178
+"1951-07",199
+"1951-08",199
+"1951-09",184
+"1951-10",162
+"1951-11",146
+"1951-12",166
+"1952-01",171
+"1952-02",180
+"1952-03",193
+"1952-04",181
+"1952-05",183
+"1952-06",218
+"1952-07",230
+"1952-08",242
+"1952-09",209
+"1952-10",191
+"1952-11",172
+"1952-12",194
+"1953-01",196
+"1953-02",196
+"1953-03",236
+"1953-04",235
+"1953-05",229
+"1953-06",243
+"1953-07",264
+"1953-08",272
+"1953-09",237
+"1953-10",211
+"1953-11",180
+"1953-12",201
+"1954-01",204
+"1954-02",188
+"1954-03",235
+"1954-04",227
+"1954-05",234
+"1954-06",264
+"1954-07",302
+"1954-08",293
+"1954-09",259
+"1954-10",229
+"1954-11",203
+"1954-12",229
+"1955-01",242
+"1955-02",233
+"1955-03",267
+"1955-04",269
+"1955-05",270
+"1955-06",315
+"1955-07",364
+"1955-08",347
+"1955-09",312
+"1955-10",274
+"1955-11",237
+"1955-12",278
+"1956-01",284
+"1956-02",277
+"1956-03",317
+"1956-04",313
+"1956-05",318
+"1956-06",374
+"1956-07",413
+"1956-08",405
+"1956-09",355
+"1956-10",306
+"1956-11",271
+"1956-12",306
+"1957-01",315
+"1957-02",301
+"1957-03",356
+"1957-04",348
+"1957-05",355
+"1957-06",422
+"1957-07",465
+"1957-08",467
+"1957-09",404
+"1957-10",347
+"1957-11",305
+"1957-12",336
+"1958-01",340
+"1958-02",318
+"1958-03",362
+"1958-04",348
+"1958-05",363
+"1958-06",435
+"1958-07",491
+"1958-08",505
+"1958-09",404
+"1958-10",359
+"1958-11",310
+"1958-12",337
+"1959-01",360
+"1959-02",342
+"1959-03",406
+"1959-04",396
+"1959-05",420
+"1959-06",472
+"1959-07",548
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+"1959-10",407
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+"1959-12",405
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+"1960-05",472
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+"1960-11",390
+"1960-12",432