PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/09-09:57:40
G01     315.8          24.1                4.6 +/-    2.03       9.1 +/-    2.03  0.050 / 0.070
G10     91.0           48.7                4.4 +/-    0.32       5.7 +/-    0.32  0.050 / 0.060
G11     296.8          25.3                5.2 +/-    1.79      10.1 +/-    1.79  0.120 / 0.430
G14     308.6          69.6                3.2 +/-    0.68       3.4 +/-    0.68  0.120 / 0.380
G18     296.9          44.6                4.5 +/-    1.65       6.1 +/-    1.65  0.100 / 0.220
G22     305.7          20.4                4.3 +/-    1.08       9.3 +/-    1.08  0.100 / 0.180
G25     95.0           11.9                2.4 +/-    2.40       6.3 +/-    2.40  0.030 / 0.040
G31     171.3          52.7                5.6 +/-    1.17       6.8 +/-    1.17  0.030 / 0.050
G32     23.4           60.4                3.3 +/-    0.52       3.7 +/-    0.52  0.090 / 0.170