PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/08-10:57:40
G01     228.4          19.0                3.5 +/-    3.58       7.9 +/-    3.58  0.100 / 0.120
G03     292.3          66.6                3.7 +/-    0.75       3.9 +/-    0.75  0.100 / 0.140
G14     82.4           29.2                3.8 +/-    1.42       6.8 +/-    1.42  0.150 / 0.320
G16     146.4          43.5                4.0 +/-    0.90       5.4 +/-    0.90  0.240 / 0.350
G22     213.6          71.7                5.6 +/-    0.42       5.8 +/-    0.42  0.030 / 0.030
G23     307.2          38.2                2.3 +/-    1.54       3.5 +/-    1.54  0.040 / 0.030
G26     98.6           53.2                4.1 +/-    0.39       5.0 +/-    0.39  0.040 / 0.090
G31     44.9           32.3                2.0 +/-    1.26       3.4 +/-    1.26  0.050 / 0.090