IGC Spy

Summary

Call sign	Show Track	Glider	Start [hms] [ft]	Finish [hms] [ft]	Time [hms]	T-Glide [count] [%] [hms]	Thermal [count] [%] [hms]	Try [count] [%] [hms]	Race Dist [Km]	T-Track Dist [Km]	Dist Dev [%]	Thermal Alt [ft]	Thermal Lost [ft] [%]	Thermal Alt (avg) [ft]	Orbit Time [sec] (stab)	Orbit Speed [kts] (stab)	Thermal Vario [kts]	Thermal Vario (stab) [kts]	Tries Alt [ft]	Tries Lost [ft]	Tries Vario [ft]	T-Track [LD]	Avg Netto T-Track Netto [kts]	T-Track Speed [kts]	STF Theory Delta [kts]	Avg Glide height Dens alt gain [kts] [%]	Race Speed [kts] [km/h]
AJ		JS3	11:25:47 8526 ft	14:47:41 5055 ft	03:21:54	21 (73.1%) 02:27:30	17 (21.7%) 00:43:43	16 (5.1%) 00:10:15	495.3	529.2	6.8%	27319	-1663 6.1%	1607	30 (32)	76 (75.8)	6.2	6.6	3093	1104	3	51.3	4.1 4.4	116.2	67 49.3	10338 16.5 %	79.5 147.2
OG		JS3	11:23:25 8641 ft	14:47:52 5055 ft	03:24:27	20 (73.4%) 02:30:05	16 (20.1%) 00:41:03	21 (6.5%) 00:13:12	500.1	538	7.6%	24038	-2003 8.3%	1502	31 (34)	74.4 (73.9)	5.8	6	4671	1396	3.5	54.9	4.2 4.6	116.1	62.1 54	10765 17.2 %	79.3 146.9

Where did I lose time? (Hover column heading for Information)

Callsign	Glider	Polar	WingLoad	Start	Lost @ start alt	Lost due to slow climb	Lost due to attempts	Lost due to poor netto	Lost due to incorrect STF	Lost due to high finish	Lost due to deviations	Lost due to Alt Band	Race Speed
AJ	JS3	18m-Gen3[JS3-18]	34	8526 ft 11:25:47	11 [sec] (0.1 %) 115 [ft] -0.13 [km/h]	0 [sec] (0 %) 6.2/6.2 [kts] 0 [km/h]	318 [sec] (2.7 %) 3/6.2 [kts] -3.97 [km/h]	413 [sec] (3.5 %) 4.4/4.6 [kts] -5.19 [km/h]	3457 [sec] (40.1 %) 116.2/67 [kts] -58.79 [km/h]	0 [sec] (0 %) 0 [ft] 0 [km/h]	828 [sec] (7.3 %) 34/495 [km] -10.8 [km/h]	56 [sec] (0.5 %) 16.5/17.2 [%] 10338/10765[ft] -0.68 [km/h]	147.2 km/h
OG	JS3	18m-Gen3[JS3-18]	34	8641 ft 11:23:25	0 [sec] (0 %) 0 [ft] 0 [km/h]	155 [sec] (1.3 %) 5.8/6.2 [kts] -1.88 [km/h]	313 [sec] (2.6 %) 3.5/5.8 [kts] -3.85 [km/h]	0 [sec] (0 %) 4.6/4.6 [kts] 0 [km/h]	4323 [sec] (54.5 %) 116.1/62.1 [kts] -79.86 [km/h]	0 [sec] (0 %) 0 [ft] 0 [km/h]	929 [sec] (8.2 %) 38/500 [km] -12.02 [km/h]	0 [sec] (0 %) 17.2/17.2 [%] 10765/10765[ft] 0 [km/h]	146.9 km/h

Thermals

Callsign	Glider	Polar	WingLoad	Count				Time [hms]				Alt Gain/Loss [ft]				Alt (avg) [ft]				Orbit Time (avg) [sec]				Speed (avg) [kts]				Orbit climb (avg) [ft]
				Tot	R	L	M	Tot	R	L	M	Tot	R	L	M	Tot	R	L	M	Tot	R	L	M	Tot	R	L	M	Tot	R	L	M
AJ	JS3	18m-Gen3[JS3-18]	34	17	7 41%	10 59%	0 0%	00:43:43	00:17:49	00:25:54	00:00:00	27319 -1663 6.1%	10669 -626 5.9%	16650 -1037 6.2%	0 -0 0%	1607	1524	1665	0	30	33	29	00	76	75.4	76.5	0	6.2	5.9	6.3	0
OG	JS3	18m-Gen3[JS3-18]	34	16	6 38%	10 63%	0 0%	00:41:03	00:14:29	00:26:34	00:00:00	24038 -2003 8.3%	9885 -402 4.1%	14153 -1601 11.3%	0 -0 0%	1502	1647	1415	0	31	34	30	00	74.4	77.4	72.6	0	5.8	6.7	5.3	0

Thermal Attempts

	Callsign	Glider	Polar	WingLoad	Count	Time [hms]	Time %	Alt [ft]	Alt Lost [ft]	Climb (avg) [kts]
	AJ	JS3	18m-Gen3[JS3-18]	34	16	00:10:15	5.1 %	3093	1104	3
	OG	JS3	18m-Gen3[JS3-18]	34	21	00:13:12	6.5 %	4671	1396	3.5

Glides

	Callsign	Glider	Polar	WingLoad	Count	Glide Time [hms]	T-Glide Time [hms]	T-Glide Time [%]	Glide Alt [ft]	Race Length [km]	Track Length [km]	T-Track Length [km]	Deviation Race/TTrack [%]	Race Speed [km/h]	Race Speed [kts]	Glide Speed [kts]	T-Glide Speed [kts]	Track Speed [kts]	T-Track Speed [kts]	Glide [LD]	T-Glide [LD]	Track [LD]	T-Track [LD]	T-Track Netto [kts]	STF Theory [kts]
	AJ	JS3	18m-Gen3[JS3-18]	34	21	02:37:45	02:27:30	73.1 %	-30734	495.3	553.7	529.2	6.8 %	147	79.5	101.7	108.8	88.9	116.2	52.9	48	59.1	51.3	4.4	67
	OG	JS3	18m-Gen3[JS3-18]	34	20	02:43:17	02:30:05	73.4 %	-27477	500.1	568.8	538	7.6 %	147	79.3	99.2	108	90.1	116.1	59.7	51	67.9	54.9	4.6	62.1

Altitudes

	callsign	Glider	Start [ft]	End [ft]	Max [ft]	Glide [ft]	T-Glide [ft]	Thermal [ft]	Thermal Lost [ft]	Thermal Lost [%]	Thermal (avg) [ft]
	AJ	JS3	8526	5055	14232	-30734	-33828	27319	1663	6.1 %	1607
	OG	JS3	8641	5055	15032	-27477	-32148	24038	2003	8.3 %	1502

Times

	Callsign	Glider	Start [hms]	End [hms]	Race [hms]	Glide [hms]	T-Glide [hms]	Thermal [hms]	Thermal Attempt [hms]	T-Glide % [%]	Thermal % [%]	Thermal Attempt % [%]	Orbit (avg) [sec]
	AJ	JS3	11:25:47	14:47:41	03:21:54	02:37:45	02:27:30	00:43:43	00:10:15	73.1 %	21.7 %	5.1 %	30
	OG	JS3	11:23:25	14:47:52	03:24:27	02:43:17	02:30:05	00:41:03	00:13:12	73.4 %	20.1 %	6.5 %	31

Summary Leg 1

Call sign	Show Track	Glider	Start [hms] [ft]	Finish [hms] [ft]	Time [hms]	T-Glide [count] [%] [hms]	Thermal [count] [%] [hms]	Try [count] [%] [hms]	Leg Dist [Km]	T-Track Dist [Km]	Dist Dev [%]	Thermal Alt [ft]	Thermal Lost [ft] [%]	Thermal Alt (avg) [ft]	Orbit Time [sec] (stab)	Orbit Speed [kts] (stab)	Thermal Vario [kts]	Tries Alt [ft]	Tries Lost [ft]	Tries Vario [ft]	T-Track [LD]	Avg Netto T-Track Netto [kts]	T-Track Speed [kts]	STF Theory Delta [kts]	Leg Speed [kts] km/h	Leg XC Speed [kts] km/h
AJ		JS3	11:25:47 8526 ft	12:00:43 7998 ft	00:34:56	6 (65.9%) 00:23:02	5 (26.6%) 00:09:17	3 (6.5%) 00:02:16	78.6	82.4	4.8%	5016	-276 5.5%	1003	29	72.5	5.3	295	357	1.3	46.4	3.8 4	115.9	63.9 52.1	72.9 135	72.8 134.9
OG		JS3	11:23:25 8641 ft	12:09:18 12034 ft	00:45:53	7 (54.4%) 00:24:57	6 (40%) 00:18:21	4 (5.5%) 00:02:31	84.2	86.7	3%	9206	-1223 13.3%	1534	29	72	5	702	492	2.8	44.1	3.3 3.6	112.5	63.8 48.8	59.4 110	71.3 132.1

Summary Leg 2

Call sign	Show Track	Glider	Start [hms] [ft]	Finish [hms] [ft]	Time [hms]	T-Glide [count] [%] [hms]	Thermal [count] [%] [hms]	Try [count] [%] [hms]	Leg Dist [Km]	T-Track Dist [Km]	Dist Dev [%]	Thermal Alt [ft]	Thermal Lost [ft] [%]	Thermal Alt (avg) [ft]	Orbit Time [sec] (stab)	Orbit Speed [kts] (stab)	Thermal Vario [kts]	Tries Alt [ft]	Tries Lost [ft]	Tries Vario [ft]	T-Track [LD]	Avg Netto T-Track Netto [kts]	T-Track Speed [kts]	STF Theory Delta [kts]	Leg Speed [kts] km/h	Leg XC Speed [kts] km/h
AJ		JS3	12:00:43 7998 ft	13:25:36 10702 ft	01:24:53	9 (70.5%) 00:59:52	8 (27%) 00:22:56	4 (2.4%) 00:02:00	179.7	201.3	12%	14442	-1151 8%	1805	29	77.1	6.2	705	173	3.5	53.2	3.2 3.5	108.9	73.1 35.8	68.6 127	73.1 135.3
OG		JS3	12:09:18 12034 ft	13:26:42 9878 ft	01:17:24	6 (77%) 00:59:35	5 (13.8%) 00:10:40	11 (9.2%) 00:07:06	182.5	205.7	12.7%	6994	-394 5.6%	1398	32	73.8	6.5	2700	559	3.8	57.3	3.7 4.2	111.8	70.2 41.6	76.4 141.5	73.6 136.4

Summary Leg 3

Call sign	Show Track	Glider	Start [hms] [ft]	Finish [hms] [ft]	Time [hms]	T-Glide [count] [%] [hms]	Thermal [count] [%] [hms]	Try [count] [%] [hms]	Leg Dist [Km]	T-Track Dist [Km]	Dist Dev [%]	Thermal Alt [ft]	Thermal Lost [ft] [%]	Thermal Alt (avg) [ft]	Orbit Time [sec] (stab)	Orbit Speed [kts] (stab)	Thermal Vario [kts]	Tries Alt [ft]	Tries Lost [ft]	Tries Vario [ft]	T-Track [LD]	Avg Netto T-Track Netto [kts]	T-Track Speed [kts]	STF Theory Delta [kts]	Leg Speed [kts] km/h	Leg XC Speed [kts] km/h
AJ		JS3	13:25:36 10702 ft	14:25:49 13605 ft	01:00:13	5 (71%) 00:42:44	4 (19.1%) 00:11:30	9 (9.9%) 00:05:59	155.6	163.9	5.3%	7860	-235 3%	1965	34	78.4	6.7	2093	572	3.5	76.3	6 6.4	124.2	56.3 67.9	83.7 155	90.4 167.4
OG		JS3	13:26:42 9878 ft	14:25:59 13572 ft	00:59:17	6 (73.7%) 00:43:40	5 (20.3%) 00:12:02	6 (6%) 00:03:35	151.6	163.5	7.9%	7837	-385 4.9%	1567	34	77.8	6.4	1269	344	3.5	99.1	5.9 6.5	121.3	52.4 68.9	82.8 153.3	92.1 170.5

Summary Leg 4

Call sign	Show Track	Glider	Start [hms] [ft]	Finish [hms] [ft]	Time [hms]	T-Glide [count] [%] [hms]	Thermal [count] [%] [hms]	Try [count] [%] [hms]	Leg Dist [Km]	T-Track Dist [Km]	Dist Dev [%]	Thermal Alt [ft]	Thermal Lost [ft] [%]	Thermal Alt (avg) [ft]	Orbit Time [sec] (stab)	Orbit Speed [kts] (stab)	Thermal Vario [kts]	Tries Alt [ft]	Tries Lost [ft]	Tries Vario [ft]	T-Track [LD]	Avg Netto T-Track Netto [kts]	T-Track Speed [kts]	STF Theory Delta [kts]	Leg Speed [kts] km/h	Leg XC Speed [kts] km/h
AJ		JS3	14:25:49 13605 ft	14:47:41 5055 ft	00:21:52	1 (100%) 00:21:52	0 (0%) 00:00:00	0 (0%) 00:00:00	81.4	81.6	0.3%	0	0 0%	0	00	0	0	0	0	0	31.3	3.2 3.3	120.9	74.4 46.5	120.5 223.2	0 0
OG		JS3	14:25:59 13572 ft	14:47:52 5055 ft	00:21:53	1 (100%) 00:21:53	0 (0%) 00:00:00	0 (0%) 00:00:00	81.9	82.1	0.2%	0	0 0%	0	00	0	0	0	0	0	31.6	3.4 3.4	121.6	75.3 46.3	121.3 224.6	0 0

Metric Info:
Track: The GPS track (every fix) in a glide between 2 thermals Including Thermal Attempts
T-Track: The GPS track (every fix) in a glide between 2 thermals Excluding Thermal Attempts (this is a better metric to use)
Glide: The distance or time between Turnpoints Including Thermal Attempts
T-Glide: The distance or time between Turnpoints Excluding Thermal Attempts
Task: The assigned task
Race: The achieved distance or time for the assigned task
Stab: Stab or Stabilised is used in thermal averages excluding the 1st and last orbits
ttrack Netto: The netto
Thermal Lost: The altitude lost between fixes while in a thermal (slow to center, stay too long)
Tries Lost: The altitude lost between fixes while in a thermal attempt (slow to center, stay too long)
Orbit Time: The time to complete an orbit.
Orbit Speed: the Ground speed of an orbit.

Notes:
- All speeds are Ground Speed, wind is not taken in account.
- A Try or Thermal Attempt is counted if the glider circles of over 18 seconds but under 60 seconds.
- A thermal is counted when the glider circles for over 60 seconds.
- Use of a logger with GNSS (GPS) altitude instead of pressure altitude will have far less reliable statistics.
- Polar and wingloading are critical for netto and speed to fly calculations, invalid entries will give eronous statistics.
- Netto is calculated for each segment (fix) rather than for each glide.
- Leg STF is based on the next thermal climb rate and current Leg netto. (Previous climb for final glide)
- For Events loaded prior to Aug 2024 Times are UTC, for after Aug 2024 times are local event location.
- Events loaded from July 2024 till 11 Aug 2024 have incorrect Netto and speed to fly.

IGC-SPY Gliders Competitions Flight LOG analysis: 2025 South African Nationals-Task 4-18m Open

2025 South African Nationals - Task 4-18m Open

Competitors Comparison