{
    "$schema": "http://json-schema.org/draft-06/schema#",
    "type": "object",
    "properties": {
        "CogAtlasID": {
            "type": "string"
        },
        "EchoTime": {
            "type": "number"
        },
        "EffectiveEchoSpacing": {
            "type": "number"
        },
        "PhaseEncodingDirection": {
            "type": "string"
        },
        "RepetitionTime": {
            "type": "number"
        },
        "SliceEncodingDirection": {
            "type": "string"
        },
        "SliceTiming": {
            "type": "array",
            "items": {
                "type": "number"
            }
        },
        "TaskName": {
            "type": "string"
        }
    }
}
{
    "$schema": "http://json-schema.org/draft-06/schema#",
    "type": "object",
    "properties": {
        "CogAtlasID": {
            "type": "string"
        },
        "EchoTime": {
            "type": "number"
        },
        "EffectiveEchoSpacing": {
            "type": "number"
        },
        "PhaseEncodingDirection": {
            "type": "string"
        },
        "RepetitionTime": {
            "type": "number"
        },
        "SliceEncodingDirection": {
            "type": "string"
        },
        "SliceTiming": {
            "type": "array",
            "items": {
                "type": "number",
                "minimum": 0
            }
        },
        "TaskName": {
            "type": "string"
        }
    }
}
Add SliceTiming >= 0 in JSON schema
Add SliceTiming >= 0 in JSON schema
