PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-11:57:30
G01     227.5          18.1                6.1 +/-    2.03      14.1 +/-    2.03  0.080 / 0.180
G03     288.6          67.8                3.9 +/-    0.80       4.2 +/-    0.80  0.080 / 0.170
G14     83.2           29.0                4.4 +/-    0.66       7.9 +/-    0.66  0.120 / 0.270
G16     145.6          44.6                7.9 +/-    1.19      10.7 +/-    1.19  0.140 / 0.360
G22     208.3          70.3                6.9 +/-    0.78       7.2 +/-    0.78  0.030 / 0.050
G23     308.6          39.7                4.7 +/-    0.64       6.9 +/-    0.64  0.040 / 0.040
G26     96.5           53.4                5.5 +/-    0.62       6.7 +/-    0.62  0.030 / 0.040
G31     45.3           31.3                3.6 +/-    0.51       6.1 +/-    0.51  0.040 / 0.040