Table 1. Fix loss rate (FLR), data retrieval loss rate (DRLR) and performance of individual GPS solar tags.
Individual | Duty cycle | Days with fix (%) | FLR | %3D | Time-lag | DRLR | Time-lag (days) | ||
---|---|---|---|---|---|---|---|---|---|
max (days) | SD (hours) | max | SD | ||||||
Carrodilla | PTT#1 | 61 | 0.66 | 78 | 9 | 13.86 | 0.46 | 22 | 2 |
Asterix | PTT#1 | 88 | 0.38 | 75 | 8 | 5.35 | 0.12 | 14 | 1 |
Goriz | PTT#1 | 91 | 0.39 | 75 | 9 | 6.95 | 0.18 | 14 | 1 |
Rover | PTT#1 | 83 | 0.33 | 90 | 8 | 7.59 | 0.20 | 10 | 1 |
Eva | PTT#1 | 87 | 0.45 | 73 | 11 | 8.31 | 0.21 | 12 | 1 |
Ixeia | PTT#1 | 87 | 0.44 | 69 | 11 | 8.36 | 0.19 | 14 | 1 |
Sevil | PTT#1 | 96 | 0.3 | 76 | 7 | 5.59 | 0.11 | 10 | 1 |
Maria | PTT#1 | 91 | 0.26 | 78 | 7 | 5.41 | 0.11 | 10 | 1 |
PTT mean | 86 | 0.4 | 77 | 9 | 7.68 | 0.20 | 13 | 1 | |
PTT SD | 11 | 0.12 | 6 | 2 | 2.79 | 0.11 | 4 | 0 | |
Deva | CTT#1 | 16 | 0.99 | 89 | 243 | 65.79 | 0.85 | 246 | 25 |
Coto | CTT#1 | 7 | 0.99 | 96 | 230 | 85.19 | 0.93 | 230 | 40 |
Luisa | CTT#2 | 90 | 0.88 | 93 | 12 | 8.49 | 0.93 | 59 | 8 |
Cotiella | CTT#3 | 24 | 0.82 | 90 | 182 | 62.15 | 0.80 | 183 | 18 |
Atilano | CTT#3 | 22 | 0.96 | 73 | 307 | 196.62 | 0.93 | 310 | 49 |
CTT mean | 32 | 0.93 | 88 | 195 | 83.65 | 0.89 | 206 | 28 | |
CTT SD | 33 | 0.07 | 9 | 111 | 69.27 | 0.06 | 94 | 16 |
Duty cycle: PTT#1 = one fix every 2 h on a 12 h ON/ 12 h OFF cycle from 7:00 to 19:00 UTC, Data retrieval every 2 days, CTT#1 = one fix every 30 s from sunrise to sunset. Data retrieval every day, CTT#2 = one fix every 15 min from sunrise to sunset. Data retrieval once a certain number of fixes are stored, CTT#3 = one fix every 15 min from sunrise to sunset. Data retrieval every day. Days with a fix (% of days obtaining at least one GPS fix), FLR = Fix Loss Rate (fraction of scheduled fixes that are lost), % 3D (% of fixes that are acquired with three or more satellites and have altitude information). DRLR = Data Retrieval Loss Rate (fraction of scheduled data retrievals that are unsuccessful). Fix Time-lag = time lag between consecutive fixes. Retrieval Time-lag = time lag between consecutive data retrievals.