PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-07:27:50
G01     259.5          38.6                7.9 +/-    2.41      11.8 +/-    2.41  0.050 / 0.040
G03     316.5          36.8                5.1 +/-    0.82       7.8 +/-    0.82  0.060 / 0.040
G11     242.7          15.8                7.6 +/-    1.61      18.6 +/-    1.61  0.070 / 0.110
G14     50.5           47.0                4.3 +/-    1.25       5.7 +/-    1.25  0.070 / 0.080
G18     226.4          32.9                9.3 +/-    2.01      15.3 +/-    2.01  0.150 / 0.350
G22     310.6          61.0                5.3 +/-    0.94       5.9 +/-    0.94  0.150 / 0.300
G25     44.9           13.4                1.7 +/-    1.44       4.5 +/-    1.44  0.050 / 0.080
G31     44.0           63.0                4.2 +/-    0.39       4.7 +/-    0.39  0.050 / 0.070
G32     72.5           25.5                5.3 +/-    1.73      10.2 +/-    1.73  0.120 / 0.140