Users familar with the Ericsson file format ``EWIS'' will recognize some of the following parameter names.
| Name | Type | Description |
| place | string | The radar location's name. |
| date_time | int or string | The time (UTC) for which the product is valid. Given in the form YYYYMMDDHHmm, for example 200001010000. |
| store_quant | string | The quantity stored. Can be any of: dbz, mm/h, mm, m/s or user-specified. |
| product | string | The product type. Can be any of: ppi, cappi, pcappi, composite, volume, vad, vvp, or user-specified. |
| prod_height | int | The intended height of the product, ie. for what elevation above sea level (m) the product is valid for, for example, 0 (the surface) or 500 (for a cappi or pcappi). |
| xsize | int | The number of pixels in the west-east direction. |
| ysize | int | The number of pixels in the north-south direction. |
| xscale | float | The geometric resolution of the pixels in the west-east direction (m). |
| yscale | float | The geometric resolution of the pixels in the north-south direction (m). |
| layers | int | The number of layers in the data section. |
| typecode | list of string(s) | The data type for each layer in the data section, according to Table 1. The number of elements in the list is equal to the layers parameter. |
| itemsize | list of int(s) | The size in bytes of a pixel in each image layer. Bitmaps are assigned itemsize 0. |
| compressed | boolean | Set to T if the data section is compressed, and F if uncompressed. |
| start_byte | list of int(s) | Contains the byte location of the beginning of each data layer in the data section. Byte 0 is the very beginning of the data section. |
| little_end | boolean | Set to T if data was written using a little endian machine, and F if from a big endian machine. |
| nodata | list of int(s) | The data value, for each layer, which denotes ``no observation''. Commonly used to flag image areas in cartesian products which are out of the radar's range. |
| elev_uppb | int | The number of elevation angles in the scan strategy used to create the radar product. |
| elev | list of float(s) | The elevation angles used for each scan in a scan strategy, in the order in which they appear in the data section. (degrees) |
| doppler | boolean | Set to T if the data has been generated with Doppler processing and F if not. |
| polar | boolean | Set to T if the data is in polar coordinates and F if not. |
| azim_uppb | int | The number of azimuths in a scan. Provided only where cartesian = F. |
| range_uppb | int | The number of range bins for each azimuth. Provided only where polar = T. |
| geo_coord | list of 2 floats | The geographical location of the radar antenna. (degrees) |
| geo_height | int | The height above mean sea level of the radar antenna (m a s l). |
| area_extent | tuple of 4 floats | The geographical location of the centres of the lower-left and upper-right image pixels, expressed in surface coordinates for that projection, in the following order: LL_x, LL_y, UR_x, UR_y (metres) |
| corners | tuple of 4 floats | The geographical location of the lower-left and upper-right image corners, in the following order: LL_x, LL_y, UR_x, UR_y (degrees) |
| pcs | string | An abbreviation of the projection used with
cartesian data. Can be polar, gnom, or user-defined
like laea20e60n (Lambert azimuthal equal area with origin at 20
E 60
N). |
| area | string | The name of the area defined according to the pcs and area_extent parameters. |
| store_slope | float | The slope (or gain) used to linearly transform data values to the specified physical quantity. |
| store_ord | float | The ordinate (or offset) used to linearly transform data values to the specified physical quantity. |
| zr_a | float | Z-R relationship constant A. |
| zr_b | float | Z-R relationship constant b. |
| quality | boolean | Set to T if the data has been quality controlled and F if not. |
| nr_radars | int | The number of radars present in a composite product. |
| radars | list of strings | Those radars used in a composite product. Each string in the list is three characters long and in lower case. |
| radar_loc | list of tuples | Each radar's location is defined in a tuple containing two ints, x and y, expressed in pixels. Only in composite products. |
| emptywp | boolean | If T, a wind profile was attempted but not enough echoes were in the volume to give a profile. |
| comment | string | A string of arbitrary length containing arbitrary information. |