So to give a phasor for 3 wires, the minimum is to give:
1) the voltages on the 3 phases (also referred to as V, voltage to neutral, not between phases)

2) the currents on the 3 phases (also referred to as I)

3) the angles between each of the voltages and the corresponding current (I'll refer to it as VIa for the lack of a clear standard)

(so this accounts for 12 values)

Other things that can not be calculated and is often omitted:

4) each of the voltage angles

5) current on the 4th wire

6) phase rotation

the main formulas I work with is:

kVA = V x I / 1000

kVA =  sqrt( kW ? + kvar ? )
kVA total = kVA red + kVA white + kVA blue

kW = V x I x cos(VIa) / 1000

things that can be calculated if you have the values above:

(sometimes these things are given and you have to calculate the values above)

7) kVA (demand) of each phase and combined (also referred to as S or Apparent Power or Demand or kVA or MD or Maximum Demand or NMD or Notified Maximum Demand or Access or Network Access - people often use these terms interchangeably although they don't always mean exactly the same thing)

kVA red = V red * I red / 1000

kVA white = V red * I white / 1000

kVA blue = V red * I blue / 1000

kVA = kVA red + kVA white + kVA blue

8) kW of each phase and combined (also referred to as P or Active Power)

kW red = kVA red * cos(VIa red)

kW white = kVA white * cos(VIa white)

kW blue = kVA blue * cos(VIa blue)

kW total = kW red + kW white + kW blue

9) kvar of each phase and combined (also referred to as Q or Reactive Power)

kvar total < 0 : leading

This comes to 44 values:

1 x 4 (I - of each of the 4 lines)

5 x 4 (V, kVA, kW, kvar, pf - of each phase + total)

6 x 3 (V angles, I angles - for each of the 3 phases)

2 x 1 (leading/lagging, phase rotation)