PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/23-19:43:00
G03     199.2          44.6               15.3 +/-    1.28      20.7 +/-    1.28  0.060 / 0.130
G07     266.2          21.9               12.1 +/-    1.78      25.4 +/-    1.78  0.060 / 0.150
G09     315.1          36.7               12.2 +/-    0.87      18.8 +/-    0.87  0.090 / 0.310
G16     67.9           61.7               15.6 +/-    0.54      17.4 +/-    0.54  0.090 / 0.290
G22     183.6          29.0               15.0 +/-    1.32      26.8 +/-    1.32  0.040 / 0.050
G23     346.6          71.4               13.6 +/-    0.61      14.2 +/-    0.61  0.040 / 0.040
G26     46.2           33.4               11.0 +/-    0.75      18.1 +/-    0.75  0.080 / 0.270
G27     124.5          18.7               17.8 +/-    0.96      40.5 +/-    0.96  0.080 / 0.220