SondeTracker

Meteorological Radiosondes Database

Operations

Sounding was ended - last measurement: 2024-03-28 00:52:34z

MAP
About Radiosonde

Number: D23059347 (23059347)

Launch Site: Santa Teresa [NM] (US)

Type: DFM17

AUX: NO

Frequency: 401.410 MHz

Max Speed: 185 km/h at 12195 m

Average Speed: 87.86 km/h

Max Altitude: 31093 m

Average Ascent Speed: 5.40 m/s

Average Descent Speed: 19.23 m/s

Status: UNKNOWN

Status Changes
Launch Site Type AUX Frequency Status Finder Landing Point Description Changes made by
APRS Statistics

Received Frames: 103

First Frame [UTC]: 2024-03-27 23:08:49z

Last Frame [UTC]: 2024-03-28 00:52:34z

Receivers: KG5YEN

Flight Time: 01:43:45 h

Distance From First Measurement: 136.00 km

Nearest City: Horizon City [TX] (US) [85.79 km]

Nearest Hunter: [0.00 km]

Ground Altitude: 1345 m

Distance from QTH: 0.00 km

APRS Data
Receiver Number Date/Time [UTC] φ λ Course [°] Speed [km/h] Altitude [m] Description
KG5YEND230593472024-03-28 00:52:3431.5035-105.30811415011148Clb=-11.5m/s t=-273.0C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:51:3331.5096-105.33310016511858Clb=-12.5m/s t=-58.4C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:50:3231.5111-105.34310018312114Clb=-12.8m/s t=-58.7C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:49:3131.5183-105.37510615912985Clb=-13.6m/s t=-58.3C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:48:3031.5245-105.40510716513847Clb=-14.1m/s t=-59.5C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:47:2931.5297-105.4310116714672Clb=-15.3m/s t=-59.7C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:46:2831.5342-105.4559612815609Clb=-15.2m/s t=-63.0C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:45:2731.5384-105.4771068016587Clb=-16.2m/s t=-62.2C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:44:2631.5384-105.4931028717644Clb=-17.9m/s t=-65.6C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:43:2531.5388-105.506834118813Clb=-19.6m/s t=-67.0C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:42:2431.5382-105.516685720073Clb=-22.3m/s t=-60.3C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:41:2331.5356-105.524422421257Clb=-18.7m/s t=-54.8C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:40:2231.5346-105.5271422022618Clb=-27.7m/s t=-51.7C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:39:2131.533-105.5273342224454Clb=-25.3m/s t=-50.0C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:38:2031.5302-105.527601726118Clb=-35.0m/s t=-52.1C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:37:1931.5315-105.5331343528319Clb=-39.8m/s t=-53.9C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:36:1831.5355-105.5381166730714Clb=-37.1m/s t=-52.1C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:35:1731.5393-105.5511409431093Clb=5.1m/s t=-49.9C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:34:1631.542-105.563939630677Clb=11.5m/s t=-52.8C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:33:1531.5441-105.5691445430261Clb=7.5m/s t=-54.8C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:32:1431.5469-105.5731428929850Clb=7.2m/s t=-55.0C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:31:1331.552-105.5771974329453Clb=10.2m/s t=-54.0C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:30:1231.5582-105.5831667029065Clb=0.7m/s t=-54.3C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:29:1131.5641-105.591115928674Clb=10.4m/s t=-53.8C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:28:1031.5678-105.6153228219Clb=3.2m/s t=-54.8C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:27:0831.5701-105.6071032827860Clb=5.9m/s t=-54.7C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:26:0731.5735-105.6151233727485Clb=6.3m/s t=-55.0C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:25:0631.5755-105.621776927093Clb=10.1m/s t=-54.4C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:24:0631.5749-105.624713726738Clb=3.6m/s t=-54.0C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:23:0431.5739-105.6271003126350Clb=8.4m/s t=-52.9C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:22:0331.572-105.63293925949Clb=9.5m/s t=-51.9C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:21:0231.5686-105.632243025578Clb=6.8m/s t=-51.5C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:20:0131.5651-105.6313091725217Clb=5.3m/s t=-50.7C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:19:0031.5627-105.633503324865Clb=5.8m/s t=-50.5C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:17:5931.5594-105.6292091324537Clb=6.2m/s t=-50.2C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:16:5831.5587-105.6273043024190Clb=8.9m/s t=-49.9C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:15:5731.5553-105.628350223797Clb=2.9m/s t=-49.3C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:14:5631.5532-105.62934423448Clb=5.0m/s t=-50.0C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:13:5531.5503-105.63194323155Clb=3.7m/s t=-52.0C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:12:5431.549-105.631561122819Clb=5.9m/s t=-51.4C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:11:5331.551-105.632713022465Clb=4.0m/s t=-51.5C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:10:5231.5496-105.6343593722075Clb=6.1m/s t=-52.8C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:09:5131.5484-105.6371101721732Clb=6.0m/s t=-53.3C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:08:5031.5457-105.64493921395Clb=4.7m/s t=-53.2C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:07:4931.5416-105.646664821067Clb=7.1m/s t=-53.4C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:06:4831.5389-105.655605920716Clb=4.8m/s t=-55.0C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:05:4731.5366-105.667596120341Clb=4.2m/s t=-59.4C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:04:4631.5341-105.675833720008Clb=5.7m/s t=-62.9C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:03:4531.5341-105.684746719707Clb=4.9m/s t=-66.9C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:02:4431.5347-105.6931126319386Clb=6.0m/s t=-67.3C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:01:4331.534-105.705806319030Clb=6.4m/s t=-66.4C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-28 00:00:4231.5321-105.714972218696Clb=4.4m/s t=-65.6C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:59:4031.5325-105.7221026918382Clb=7.0m/s t=-64.3C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:58:3931.5316-105.734736918092Clb=5.4m/s t=-64.0C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:57:3831.532-105.747997617796Clb=3.9m/s t=-64.1C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:56:3731.5345-105.76310112417506Clb=5.3m/s t=-65.6C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:55:3631.5336-105.782859317175Clb=5.1m/s t=-65.0C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:54:3531.5335-105.81089316877Clb=3.6m/s t=-63.7C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:53:3431.5381-105.81611910416588Clb=4.0m/s t=-63.4C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:52:3331.5452-105.83810313716294Clb=5.3m/s t=-65.8C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:51:3231.5485-105.8639413516005Clb=3.9m/s t=-65.3C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:50:3131.5505-105.8889512615696Clb=6.0m/s t=-63.3C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:49:3031.5542-105.9110213715382Clb=4.0m/s t=-62.5C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:48:2931.5599-105.93510715715074Clb=5.7m/s t=-61.1C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:47:2831.5662-105.96210416714782Clb=4.2m/s t=-60.5C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:46:2731.5706-105.99210115614495Clb=6.2m/s t=-59.1C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:45:2631.5755-106.01910316514216Clb=5.5m/s t=-59.1C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:44:2531.5812-106.04710416113942Clb=2.5m/s t=-59.9C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:43:2431.5875-106.07610616313642Clb=5.5m/s t=-58.1C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:42:2331.5932-106.10610016713348Clb=5.2m/s t=-58.1C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:41:2231.5991-106.13510813713050Clb=5.2m/s t=-57.8C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:40:2131.6066-106.16310516512749Clb=5.0m/s t=-59.3C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:39:2031.6134-106.19310417612468Clb=5.8m/s t=-59.3C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:38:1931.6177-106.2259818512195Clb=5.0m/s t=-58.8C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:37:1831.6217-106.2569716911901Clb=5.5m/s t=-59.0C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:36:1731.6268-106.28211315711572Clb=4.8m/s t=-57.3C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:35:1631.6338-106.30710813711214Clb=4.7m/s t=-54.5C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:34:1531.6434-106.3312014810899Clb=4.0m/s t=-52.4C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:33:1431.6532-106.35211514410609Clb=3.2m/s t=-50.2C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:32:1331.6629-106.37411713710316Clb=4.2m/s t=-47.9C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:31:1231.6722-106.39611413710031Clb=3.6m/s t=-45.8C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:30:1131.6816-106.4161181399758Clb=3.4m/s t=-43.6C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:29:1031.6904-106.4381121269477Clb=5.0m/s t=-41.7C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:28:0931.6989-106.461121399201Clb=3.3m/s t=-39.7C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:27:0731.708-106.4781211158912Clb=3.3m/s t=-37.8C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:26:0631.7177-106.4961201118591Clb=6.9m/s t=-35.3C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:25:0531.7265-106.5141201098271Clb=7.2m/s t=-32.7C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:24:0531.7351-106.5311301247970Clb=5.4m/s t=-30.7C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:23:0331.7445-106.5471291137670Clb=3.2m/s t=-28.4C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:22:0231.7546-106.5631391247377Clb=4.8m/s t=-26.5C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:21:0131.7655-106.577130987053Clb=5.9m/s t=-24.1C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:20:0031.7761-106.591124806734Clb=3.8m/s t=-22.1C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:18:5931.7858-106.603138856391Clb=5.5m/s t=-19.6C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:17:5831.7953-106.616128986044Clb=5.3m/s t=-16.7C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:16:5731.8055-106.6271471065744Clb=4.4m/s t=-14.4C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:15:5631.8161-106.636158765425Clb=3.4m/s t=-12.6C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:14:5531.8251-106.645126895122Clb=4.3m/s t=-10.5C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:13:5431.8343-106.653148524802Clb=6.7m/s t=-9.3C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:12:5331.841-106.661134434441Clb=6.2m/s t=-6.7C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:11:5231.8469-106.67133804089Clb=4.3m/s t=-3.7C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:10:5131.8547-106.677163783742Clb=6.1m/s t=-2.0C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:09:5031.8626-106.68183373414Clb=3.5m/s t=-4.6C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde
KG5YEND230593472024-03-27 23:08:4931.8654-106.681195263085Clb=4.4m/s t=-2.2C h=-1.0% p=-1.0hPa 401.410 MHz Type=DFM17 ser=23059347 Radiosonde