current speed: 38 mph
key 0:0
key 0:13 ^-----------^ current speed
pair 0:13 ^-----------^ current speed
key 15:15 ^
num 15:17 ^^ 38
pair 15:17 ^^ 38
msg :current speed: 38 mph
format :#: # mph
{
"col_0": "current speed",
"col_1": 38
}