PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/13-03:27:50
G01     224.5          17.0                5.5 +/-    1.36      13.1 +/-    1.36  0.030 / 0.030
G03     289.6          67.2                3.1 +/-    0.77       3.4 +/-    0.77  0.040 / 0.040
G14     84.9           26.3                4.6 +/-    0.83       8.7 +/-    0.83  0.150 / 0.260
G16     144.5          44.9                6.8 +/-    0.56       9.2 +/-    0.56  0.170 / 0.280
G22     222.3          70.8                4.0 +/-    0.78       4.2 +/-    0.78  0.120 / 0.250
G23     308.4          39.0              -14.9 +/-    1.25     -22.1 +/-    1.25  0.120 / 0.220
G26     96.9           53.9                4.2 +/-    0.42       5.1 +/-    0.42  0.050 / 0.080
G31     45.9           30.8                2.5 +/-    0.44       4.3 +/-    0.44  0.050 / 0.080