diff --git a/toardb/stationmeta/fixtures/stationmeta_core.json b/toardb/stationmeta/fixtures/stationmeta_core.json
index e4b23491d743d81c561f2248acb89d8a6e3d50e9..c819579fe02f1e61401362070c796af75d24bd18 100644
--- a/toardb/stationmeta/fixtures/stationmeta_core.json
+++ b/toardb/stationmeta/fixtures/stationmeta_core.json
@@ -10,7 +10,6 @@
     "coordinate_validator_id": 1,
     "type_of_environment": 0,
     "type_of_area": 0,
-    "category": "",
     "timezone": "",
     "additional_metadata": {}
   },
@@ -25,7 +24,6 @@
     "coordinate_validator_id": 1,
     "type_of_environment": 0,
     "type_of_area": 0,
-    "category": "",
     "timezone": "",
     "additional_metadata": {}
   },
@@ -40,7 +38,6 @@
     "coordinate_validator_id": 1,
     "type_of_environment":0,
     "type_of_area":0,
-    "category":"",
     "timezone":"",
     "additional_metadata": {}
   }
diff --git a/toardb/stationmeta/models_core.py b/toardb/stationmeta/models_core.py
index c4d5420999aa618b64c7a19b04635ab08270dc7d..1f0b0eaa2ade3198b4b3e34eb4fb754cc38783dd 100644
--- a/toardb/stationmeta/models_core.py
+++ b/toardb/stationmeta/models_core.py
@@ -43,8 +43,6 @@ class StationmetaCore_WithoutCoords(Base):
     +------------------------------+--------------------------+-----------+----------+----------------------------------------------+
     | type_of_area                 | integer                  |           | not null |                                              |
     +------------------------------+--------------------------+-----------+----------+----------------------------------------------+
-    | category                     | character varying(128)   |           | not null |                                              |
-    +------------------------------+--------------------------+-----------+----------+----------------------------------------------+
     | timezone                     | character varying(64)    |           | not null |                                              |
     +------------------------------+--------------------------+-----------+----------+----------------------------------------------+
     | additional_metadata          | jsonb                    |           | not null |                                              |
diff --git a/toardb/stationmeta/pydantic_toar_testing.py b/toardb/stationmeta/pydantic_toar_testing.py
index b20a1c4b998df1a77cf8c4f93665f6c0fe810eba..4585aa257366ecd1f3e81e0625e50cd7751090d2 100644
--- a/toardb/stationmeta/pydantic_toar_testing.py
+++ b/toardb/stationmeta/pydantic_toar_testing.py
@@ -30,7 +30,6 @@ class StationmetaCoreBase(BaseModel):
     coordinate_validation_date: dt.datetime
     type_of_environment: int
     type_of_area: int
-    category: str
     timezone: str
     additional_metadata: Json
     coordinate_validator_id: int
@@ -60,7 +59,6 @@ external_data_toar = {
     "coordinate_validation_date":"2020-03-11T12:22:18.047974+01:00",
     "type_of_environment":0,
     "type_of_area":0,
-    "category":"",
     "timezone":"",
     "coordinate_validator_id": 1,
     "additional_metadata": {}
diff --git a/toardb/stationmeta/stationmeta.py b/toardb/stationmeta/stationmeta.py
index 0ad7251e9ae7e206146b9f0c8c1c320564ec0cf5..0c68dd9552ed206f394f4a94654e8d5527dc9a76 100644
--- a/toardb/stationmeta/stationmeta.py
+++ b/toardb/stationmeta/stationmeta.py
@@ -6,7 +6,6 @@ from typing import List
 from fastapi import APIRouter, Depends, HTTPException, Body
 from sqlalchemy.orm import Session, sessionmaker
 from . import crud, schemas
-from sqlalchemy import create_engine
 from toardb.utils.database import get_db
 
 router = APIRouter()
diff --git a/toardb/timeseries/fixtures/timeseries.json b/toardb/timeseries/fixtures/timeseries.json
index a53585c580bef67e42618e3b34f664f30f3bad00..167f2dd40f607cbf4f02e68b5a4a7a5653a56859 100644
--- a/toardb/timeseries/fixtures/timeseries.json
+++ b/toardb/timeseries/fixtures/timeseries.json
@@ -9,7 +9,7 @@
     "aggregation": 0,
     "data_start_date": "2003-09-07 15:30:00",
     "data_end_date": "2016-12-31 14:30:00",
-    "measurement_method": "UV absorption",
+    "measurement_method": 0,
     "sampling_height": 7,
     "additional_metadata": "{}",
     "date_added": "2020-05-15 15:30:00",